have you ever do some thing specill to cheer your parents up?

I am not sure how old your parents are, or what your finances are like to offer something so... If you are ok with money, take your parents on a vacation somewhere you can relax and just enjoy each others company. Try for a week, if that wont work out then a long weekend. If you cant afford to do that then have them over for an afternoon and bar b que, let them relax. Sit out side then go in later and watch a movie together. Or take them out to the movies and dinner one night. If they wont go or come over then one night get some carry out, rent a movie and drop in on them. Just some ideas. I think it is great that you think so much of your parents. Good luck.