I've had my ileostomy for 15 years and it definitely was one of the best things I did for myself. I fought having surgery. I was hospitalized, losing a lot of blood, hemorraging from the vaginal fistula and all of the blood in the colon, etc. I couldn't go anywhere because I had to be near a bathroom. I never took my children on picnics, etc. I missed out on a lot of life, so I eventually agreed to have my colon and rectum removed.
Once I had the surgery, I became a free woman! My children are all grown now so I do a lot of traveling...even to Europe. I swim all of the time, been snorkling, parisailing, etc. The only thing I can't do is move my piano during spring cleaning! Also, the surgery gave new meaning to the term "Bag Lady"!
So, give yourself time and keep looking forward to the life ahead of you. It really is wonderful. Before you know it, your colostomy will be "normal" to you. For me, it's like this is the way I've always been. And, I'm so thankful for the surgery. If I had lived in a different age, I would have been six feet under! It has given me 15 years of a great life and I expect to have many, many more years on this earth.