"But my life is worth nothing to me unless I use it for finishing the work assigned to me by the Lord Jesus - the work of telling others the Good News about the wonderful grace of God." Acts 20:24
Do you think that Paul is alone in how he felt? He had purpose. He was dedicated fully to God's work. He was committed.
That commitment is what makes the difference. It changes everything. People can be committed to anything - their hobbies, work, spouse, family. But the most important commitment that anyone can ever make is the one to God.
Most times, people misunderstand commitment. They panic and flee from it. But when a true and devote Christian truly commits their life to the Lord, that's when they get used like Paul was. Paul stood against the powers of darkness, he stood before nations and kings. Some of us are called for that as well.
It's sad when we miss the opportunity to serve God because we are distracted by every situation that pops up in our lives. Remember the first Commandment.
"You must not have any other gods but Me." Exodus 20:3
God must - MUST - be our primary focus in life. He should come before anything else. That doesn't mean that we shouldn't take care of our families or that we shouldn't have jobs. We need to have the right perspective, to see things how God wants us to see them. To not ignore the person who needs prayer. To not indulge ourselves with our hobbies, and not give God the place in our lives that He deserves.
But Jesus told him, "Anyone who puts a hand to the plow and then looks back is not fit for the Kingdom of God." Luke 9:62
Commit yourself to God. Trust in His plans for you. Don't go looking back to the world for purpose. You won't find it.