I have what I'm told is chronic constipation. What are good ways to treat this?

See a GI. Foods high in fat tend to constipate you. Foods high in fiber favor looser stools. Fruits vegetable, whole grains are excellent sources of fiber. Also, fiber only works if u are well hydrated so increase water, juice etc. See a GI specialist to rule out another cause of your problem. Supplements can then be added until you have regular bms. Very rarely you may need surgery.