Doing something is better than doing nothing.
This reminds me that the first time I saw the Yes Minister quote “we must do something; this is something; therefore, we must do this” (out of context, in a signature on Usenet) I thought it was supposed to be surreal humour like “a hamburger is better than nothing; nothing is better than eternal happiness; therefore, a hamburger is better than eternal happiness”. I didn't notice that that quote had a non-patently-inane reading until years later.
I started going out with a fantastic girl a couple of weeks ago. Everything is great, except that whenever I've sent her a text message or email requesting something and haven't received a response yet, I experience significant dysphoric anxiety, fearing that her response will be not just "no" but "no and I don't want to date you any more". This is due to brain chemistry or personal history, take your pick—either seems like a possible explanation to me. But there's certainly no evidence supporting the idea that this is likely to happen, nor is the anxiety helping me prevent it or helping me in any other way.
Does anyone have evidence-based advice, or pointers to same, on dealing with this kind of issue? It is the only splotch on what have otherwise been the best two weeks of my life.