Chronic Constipation. Piles frequently.

Since last 2 months I am suffering from Piles on and off and I have tried various allopathic medicines, laxatives but nothing is giving me a permanent relief. The major reason could be constipation. I follow a very healthy diet, I start with Amla juice in hot water in the morning, followed by soaked fig and dry fruits, then vegetable juice, followed by 3-4 types of fruits, followed by a small portion of breakfast. Then I have lunch of roti and some curry followed by butter milk. I include green tea and lemon squeezed water wherever possible. And then I keep dinner light with soup/salad/green vegetable curry. I exercise regularly for 1 hr. I drink 5-6 ltr water. What can I do extra to relieve my constipation. Either I'll not get the urge to pass the stool every day and whenever I do, I am not able to evacuate my bowel fully. This leads to hardening of stool at times. History - I have always had the constipation since childhood, but now it is creating other issues like piles frequently.