Scarcity mindset is driving me crazy

Update - wow, thank you all for the responses! Definitely got some useful advice and how to change my perspective. Glad to know I’m not alone in this 🥲

I’m currently on 4.75mg (titrating slowly). I have 210mg stocked up. And I spent more than I could afford on tirz the last couple of months. This year I’m trying to get in control of my budget. But I keep thinking what I have is not enough and that I should buy more right now. And that if I do buy some, it’ll be the last time. Which obviously isn’t the case, because I’ll have the same thoughts again in a few weeks. Just wanted to vent and see if others can relate since it’s been so difficult for us to feel secure in obtaining this life changing med long term, at least for now.