Feeling bad for saying no, resentful when you say yes

What Is this feeling that I get when I really don’t want to do something, but end up doing it anyway?

It really does annoy me, because I end up feeling either bad for saying no or resentful when I say yes.

Does it come from a place of wanting to people please? Or not wanting to let people down? Is it putting other peoples needs above my own?…I need to get to the bottom of this, because it really aggravates me.

When I do say yes when I don’t want too, I have this extreme verbal conflict with myself as to why I agreed to this shit in the first place lol. If I end up saying no, it comes with extreme guilt of letting people down or even fear of missing out on an opportunity to socialise.

Does anyone else struggle with this, or is it just me?

Adding a little bit of context…I love my own company…but do try and make the effort to be around people I really care about.

Why is it at my big age I am forcing myself to go outside lol!

Let me know if any of you struggle with this? Please give tips and suggestions on how to overcome this because it’s annoying.