*smacks Fel with a curled up newspaper* No! Bad Fel, baaad.
Quit making excuses for yourself, you asked for advice and that's exactly what you got. Go see a therapist! In times like these it's okay to be a little selfish, you are what's important right now. Not your wife. Not your kids. You. It may not feel right, but it's what you need to do. While having a plan for getting help is a great step in the right direction, it means very little if you don't have a professional there to work you through it. You said it yourself, you had a moment of weakness and weren't able to think rationally, who's to say that it won't happen again? Well, it will if you don't get the help that you so desperately need, and now. Trust me, therapy is most definitely the best option that you have right now, so just do it already. You won't regret it, I promise.