Generally speaking, saying yes provides more opportunity and better experiences because you're doing something you don't usually do.
Of course the typical difficulty that you and I face, is that sometimes saying yes brings overwhelming fear which means we cannot physically do it, or we may face panic attacks and other struggles.
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Do you want to go clubbing?, travelling?, do you want to go to a party? All of these things would provide anxiety for me, but you have to leave it behind as it will. By doing these things, you'd probably have a good time despite your haunting thoughts. You have to try and go with your gut feeling and take a change. Perhaps try and set a goal and say you'll say yes for a few days. See how you feel, even if it may cause anxiety beforehand. I guarantee, that the things you've wanted to do, but have been scared to say yes to, will be fine.
Of course there are priorities, and you may not be in your stage of recovery where you feel comfortable. I have to say this was the biggest thing stopping me. When my anxiety was quite severe I didn't feel anywhere near ready to be doing the things I am doing now. So, it's totally understandable if you can't say yes to everything right now. Don't beat yourself up about it, I can totally sympathise and understand that mindset. My anxiety still stops me from saying yes to things now, but as time is moving on for me, the more things I am able to say yes to, and I only feel this way because of the stage I am at. It does take time to train your brain to battle the doubting thoughts, so try to be patient and keep going!
Of course there are priorities, and you may not be in your stage of recovery where you feel comfortable. I have to say this was the biggest thing stopping me. When my anxiety was quite severe I didn't feel anywhere near ready to be doing the things I am doing now. So, it's totally understandable if you can't say yes to everything right now. Don't beat yourself up about it, I can totally sympathise and understand that mindset. My anxiety still stops me from saying yes to things now, but as time is moving on for me, the more things I am able to say yes to, and I only feel this way because of the stage I am at. It does take time to train your brain to battle the doubting thoughts, so try to be patient and keep going!
Best Wishes,