Husband s/o struggling with infertility

My husband just recently had an analysis done on his sperm. It came back abnormal with low count and low motility. He is devastated. We are 22 and have been trying to conceive for 3 years. He is very fit and active and eats pretty well. What can I do to help him feel better about himself, as well as are there proven ways to improve sperm count and motility?