Therapy?

Due to ongoing issues my wife thinks I need therapy. She discussed it with her therapist and that lady agrees. I am not one that sees any way that just talking about my issues with a complete stranger would help in any way. I’m more of an introvert and never feel completely comfortable around people I know well. Trying to discuss personal stuff with a complete stranger would be very stressful for me.
Nevermind the fact that maybe I just need to man up and get over myself.
Anybody got any experience with this sort of thing?
we've been through this and what i've found out is my wife is way smarter than me - just do what she asks - you'll be better off in the long run