1 Samuel 30:6 (NKJV)
Some people know about things like cars, lawn care, and home repairs, to the extent that they are skilled in those various areas, and they can do many things for themselves with those different things. But then there are other people who are not very skilled in some of these things, and those people need to call someone else to do their work for them. It is wonderful to know someone else who can do something for you, but it is even better if you can do it yourself.
In 1 Samuel 30, David was in a difficult situation. While David and his men were away, an enemy attacked the city where David and his follower's families lived, burned the city, and carried away the women and children. In this terrible situation it says that everyone was grieved, and the people even talked about killing David. David could have given in to the feelings of distress that everyone else felt, but that would not have helped. No, when things looked bad, David strengthened himself, he encouraged himself, in the Lord.
David could have waited until someone else did something to change the mood of the group, but that may have been too late. Instead, David took the initiative and strengthened himself in the Lord. David put himself in the position to hear from God, and God gave David direction about what to do. The next time you have a problem, don't just passively wait for someone else to do something or just hope things will change, get your focus on God, strengthen yourself in the Lord, and take the steps that God will give you to bring you the victory you need!