In our quest for living a pure, focused life that pleases God, we all hit the wall at one time or another. What do we do then? Give up... Not an option. I have had times when the road has gotten long... Those periods can be very challenging. When they happen, I go to God and ask for His strength for the journey.
Both sin and sickness came into the world through the fall of the human race. Therefore, we must look for the healing of both in the savior of the human race. God is as willing to heal believers as He is to forgive unbelievers. Know this; if He was merciful enough to forgive you when you were unconverted, He is merciful enough to heal you now that you are in His family!
We need to start treating ourselves how we deserve to be treated, even if you feel that no one else does. Prove to the world you are worth something by treating yourself with the utmost respect and hope that other people will follow your example. And even if they don't, at least one person in the world is treating you well: You.