I have a perianal fissure, I had a abbcess about two years ago. What do I do wrong?

Can recur. Anal fissures are like paper-cuts in the anus. They can bleed, hurt, & recur, particularly with defecation & any other activity that increases pelvic pressure. Disorders of anal-rectal function, straining at hard stool, prolonged sitting, heavy lifting, long distance walks/runs are causative & should be addressed. If stool softeners, fiber, topical rx, & behavior changes don't cure, see a surgeon.