I've found that cutting out gluten and dairy were the only way to eliminate my constant constipation. I also eat papaya daily and take magnesium.
Enemas can become addictive, so you should try to start reducing your use of them. The most helpful thing you can do is increase your fiber intake: plenty of fresh fruits and vegetables, as well as fiber supplements (which you can find at the grocery store). Increase your use of supplements gradually, and make sure you drink plenty of fresh water. Try that for a few weeks, and you should be going on a once-a-day schedule.