Preacher's Confession

When I gave my life to the Lord, I used to get angry with myself all the time and I felt hopeless. I kept falling into sin and making dumb decisions that kept me from being successful. How could I be so smart and still be so stupid that I can't beat this thing? Self-pity began to gain strength. I got depressed, at one point I was homeless, and I gave up on myself. I walked away from God many times...