There are so many ways we can approach His purpose of work for our lives. God does not want and never wanted us all to be preachers and missionaries. This is one of the worst heretical lies of the modern evangelical church and is probably one of the reasons our society is so dysfunctional. I remember many times throughout my life that young men and women would walk down the aisle at altar call and tell the pastor that they felt led into being pastors or missionaries. And of course, there would be the inevitable celebration and commotion as if this were the second-greatest thing a mortal could do (after being saved, of course). But I want to make clear that this is a deception, probably from Satan himself. The problem with this viewpoint is that God wants His children to be in every corner of the earth, doing every imaginable type of work, so that every single possible person can be reached. Moreover, God loves variety in all things because He is infinitely creative. He loves variety in nature, in the races of people, etc. (the racists, of course, are dead wrong on this point -- there is no perfect or preferable race to God because He artistically enjoys all the multitude of colors in His children). So, being loving and creative, He wants His people involved in all areas of life, no area or job being more important than another -- they're just different.
And God wants all these choices and differences not just because He wants us to reach and to serve others, making our impact on the world, but also because He wants us to be happy. Variety is truly the spice of life. It is those wonderful, surprising adventures and new things that give life its flavor and make it enjoyable. Change is and should be almost always good (within the right moral parameters and driven by the purpose of love, of course). Therefore, we should rejoice as much to hear children say, "I think God has led me to be a mechanic," as we do when they say, "I think God wants me to be a missionary to China." The joyful point is that they look to God for guidance on their lives and submit to Him for His plan and purpose in their lives regardless of what work they do. There is nobility in all the work that life offers. A garbageman is as noble and important in God's eyes as the college professor.
Perhaps this is where we mistakenly start feeling that work is a drudgery. We do not realize that our work is just as important in His kingdom as the pastor's work and as the boss's work, etc. It takes every one of us to work out God's incredible plans, and the absence of us or our work has a definite impact whether we realize it or not, regardless of what high or humble position we hold. And God will judge us all equally (first for salvation at the cross), then for the Bema Seat judgment of His children's works. During that judgement, God will consider each profession and job as equally important. What He will be most interested in is what we did with what we had, what we put into it, what we sacrificed, what we held back, how difficult it was for us, what pressures we were under, how we treated others especially when we were under pressure, etc. God is faithful and true. He will not forget a single thing that we have done in His name, no matter how mundane, humble, or covert.
Since work is so important, we should teach our children that it is important as well, and that ALL work is important for society and for God's purpose. We should always give our best in our jobs, no matter what those jobs are, both at home and in the workplace, when we receive credit and when no one is looking. And we should always remember that work is inescapable and indispensable for developing our own character and providing us a means to serve others. We should strike the word retirement from our Dictionaries (I speak metaphorically, not legalistically). So much mischief, damage, and unnecessary cost has been inflicted on our modern society because of the concept of retirement -- the very ungodly idea of just quitting all contribution and living lives of empty self-indulgence in our last years. Maybe this is one of the reasons that people turn into frail, helpless creatures at the end of life. Perhaps they have stopped trying, and inevitably reap the empty dissipation that they have sowed. In our autumn years, we are still important, maybe even critical because we are the repositories of human and Godly wisdom gathered from a life of toil and troubles. During those late years, we can help the younger ones who have not yet walked the many paths of life experiences. There's nothing wrong with closing one chapter and opening another one up just as I have done. I retired from the military, but I went to work in new ventures and adventures for my life. I certainly can't just quit when I have so much to offer others in experience and wisdom and even material assistance.
This has been a long posting, but it is certainly important and worth writing. Please don't ever forget how important you are in God's eyes and how important your contribution is to those around you and society at large. May God bless you in your walk with Him!