Some people are disappointed because they feel they have not fulfilled their calling in life, and stuck in a place where they cannot make use of their talent. Others worry about their future.
Whatever your situation is, and wherever you are right now, you are exactly where you need to be. It is the place or situation in which God has called you to overcome, learn and prevail. Make the best of today with what's on your hand; today is what matters. If we give in to the urges to complain where we are at life or totally give up doing the good work we do, we may loose sight of the thing that we need to do to fulfill any of our God given calling.
The Lord is watching, so let us do what we need to do today heartily as we work for the Lord and not for men. True validation comes from the Lord and He will guide our path to fulfill the purpose He has for us.
Whatever you do, do your work heartily, as for the Lord rather than for men