I Can't Stand My Husband, He Irritates Me And He Hasn't Progressed In His Career And Is Now Too Old To Make A Change. We Have Grown Apart And I Feel Trapped. What Can I Do?

You may have a tough time financially, but you are NOT too old to meet a new man.  i did it after divorcing at the age of 41.

This is serious i would try counseling to help if you can't resolve this or bring any spark back i would move on there is no sense in you being unhapping or him

I am 38 and divorcing. It is always better to be alone and at peace than to be with someone but unhappy. I also feel financial insecurity, but fear is simply something to work thru, not a reason to stop trying.
In my case, we tried counseling 4 times and separated once before, so when I finally made the decision, I knew I had done all I could. Definitely, if you haven't done it yet, try counseling.
As for his career, he may not be able to improve that. I was mad at my husband for years for the same reason but eventually I realized that he is very limited in his intellect and self-confidence and that the career thing would never change. Sometimes you just have to accept that.
The debt is another matter. There are so many services---many of them free (including books you can check out at the library)---that help people get out of debt, that there is no reason to not tackle that problem.
Don't worry about the "finding a man" part. I know women who found the love of their lives at ages 40, 54, 67 and even 82! That part is so unimportant right now, so put it out of your mind.
Ultimately, if you decide you are unhappy enough to definitely divorce, don't let money worries, kids, "security", the judgement of others, or anything else stop you from following your true path and living the life you deserve.
And don't buy in to the "marriage is forever and a sacred vow" crap. What's sacred is your commitment to yourself and the journey your soul is undergoing in this life. Good luck to you.