Hi there! I really understand your position and i'm in the same place on some days, luckily i love my job but despite that the anxiety kicks in when wanting to go outside. It's really important as you said you use some tricks that are used in CBT, about changing behaviour patterns and twisting potential negative outcomes back into positive opportunities.
Especially considering you want to start your own business (similar to me after i finish working in education haha!
) then you need to be able to be the master of your own mind, and show your anxiety who is the boss. It is your body, you are in charge, you have the potential to be your own God, but mental health will cause you to make the wrong decisions and second-guess the right ones.
Just remember how to know which decisions are good ones and which are bad ones.
The good decisions are the ones that get you fighting your anxiety, so in this case it would be the ones that get you outside and interacting with other people.
Meanwhile the bad decisions are the ones that create or provide excuses for you staying indoors.
Filter the bad ones out and ignore them or twist them into positives. E.g "I don't want to go to that job placement interview today, they're going to judge me and i'm going to be rejected." into "I need to make sure that i'm out of the house and ready in time for that Job interview, punctuality matters and they'll be far more concerned about that, than anything else. Even if i don't get through i have still learnt more about the process, and if i do get through then AWESOME!"
It's easier said than done obviously, as with all mental health issues. But try your best and best of luck , if you wanna discuss it then you're welcome to here or on PMS to me, i don't mind either way.
BEST OF LUCK and BEST REGARDS!
From Francis.