It is definitely scary. I want to remind you that you were once a decently happy person and that therapy (both individual and couples therapy) is likely one of the few options you have to move back in that direction.
It’s worth it (speaking from experience). That weight on your shoulders is just waiting to come off, but you likely need a bit of help to get things started.
“hire good private teachers, and accept the resulting costs as money well-spent.” - Marcus Aurelius