After thinking about this for awhile, the Lord gently reminded me of a few things He's given to me. I was reminded of the beautiful wife I have and my sweet daughter and how life would be drastically worse without them. I also was reminded of His Salvation and many things I don't have to live with like hunger, homelessness and poverty. Immediately, the weight was lifted from my shoulders and I began to praise the Lord rather than wonder if I were of benefit to Him.
I challenge you to this simple task: the next time you feel useless, think of the blessings God has given to you and the cursed things you do not have to live with. I think your attitude will change and your spirit be lifted. God bless you all this week.