Sorry, this is all bass ackwards. You don't wait to get over her, then start making your life better. You make your life better, and THAT is what gets you moving toward being over her. Along with all of the other things countless posters have urged you to do.
If seeing your IC feels "pointless", then get another one. Keep trying until you find one that helps you. They are out there, and nothing in your sitch is exotic or too hard for any IC who knows what they're doing. This isn't to minimize your suffering, just to make sure you understand that there are really good ICs out there who will help you, and getting cheated on and losing your spouse isn't something they haven't seen and dealt with.
Look at your signature block at the end of your posts:
"Rope dropped, rebuilding my life for future adventures".
Get going!
Me: 46 W: 44 Married: 17 Together 21 D13; S10 BD: 03.03.15 (Not attracted to you) Almost 2 years trying, alone, to save marriage Status now: Divorced (effective 06.13.17)