Do I have to change my diet or are these serious symptoms.?

I absolute hate going #2. I have to wipe and wipe and wipe until it hurts. Most of the time I'm very close to being finished wiping when I see that I pretty much have to start the process all over again. Then a half hour later I have to go back for touch ups; something even two or three times. This leads to slight bleeding. This has been going on consistently for quite a few years. I thought it might have had to do with drinking alcohol too often, which I have reduced down to all most nothing, but it hasn't helped. I'm getting depressed and irratated. Can anyone suggest anything or help?