Crohn's affecting my career - advice needed

I haven't posted lately a lot as I moved out and in and the last two weeks were extremely hectic and add up I had a severe cold. I'm a college teacher but was nominated to have an extra job, a part time one, but it will be an asset if it is put in my CV. It's not a job per se but a new qualification. I only seek the experience. Lately,my GI put me on a B complex injections course. I was to take 5 injections for two weeks and was supposed to see my GI afterwards. I had the first three and then got this nasty cold and had to stop them. These injections gave me a real boost and I managed to run a lot of errands and work. Things I couldn't do coz of fatigue and weakness. This new job would require more effort and energy. I'm afraid that my colon might disappoint me. I don't want to accept and then turn people down. A friend told me to think well of the effect of stress on my health. When I was studying my masters, had a full time job and commuting twice per week to another city for 5 years, my colon was in its worst conditions and I was even diagnosed as a Crohnie in my third year of study. These years were a real torture but I was not put then on pred, MTX, ENTOCORT and a full dose of pentasa. I'm really confused and don't want Crohn's to control my life. I know that you will appreciate my concerns.
Any advice will be highly appreciated.

This is something I struggle with often. Sometimes I feel like there is so much more I could do - with my career, my family, my hobbies - if it weren't for the concern about stress and unpredictability of how I'll be feeling day to day. I pick and choose commitments very carefully. If it isn't something that is really, truly important to me, I don't do it. I don't keep in touch with and see nearly as many friends as I'd like. Traveling? Forget it unless there is a special event to attend. Extra assignment at work, I won't be volunteering. But my kids football game early in the morning that I need to wake up hours before just to get out the door? Yes. Travel to a good friends wedding? Yes.

It sucks that it has to be this way, but I prioritize everything and not everything makes the cut that I want to. Sometimes it makes me look selfish. Or anti social. I try to feel fortunate about the things I can do, that others maybe can't. And I do have much to be thankful for. Even with CD. But it still makes me mad that I can't do it all. We play the hand we're dealt. I will say that CD has really made me take stock and assess what are the really important things to me. I often ask myself, is it something I will regret not doing years from now. If it is, I take the risk and do it. As the line from A Dirty Harry movie says, "a man's got to know his limitations"

I am struggling with that as well....3 months ago I got a clinical job... so much stress! besides CD, I have MS and I've had one of those attackes three weeks ago. Monday I kept running to the BR, but now I have stabbing pain where the CD affects me.