I think this is similar to your other question. But, I think the first step has been taken. You recognize that you have these mistrust issues and you grew up that way. The next step is to work on them. Because your wife is involved, she needs to be involved in the therapy. You both need to learn communication strategies to handle situations when they arise.

Can you give an example of a mistrust of your wife? Learning to pinpoint triggers is a big part of taking care of your bipolar. Learning coping skills for those triggers is the goal.