Never use the word “should”, even to yourself. Authoritarian scam word.
Discussion
Not the kind of pleasant reminder that I'd expect from someone with "toxic" in their name. Good advice.
Another trap word is "just".
If I had just done (X), maybe I wouldn't have had (bad thing happen).
Where X is something that seems simple, but is difficult and most people don't actually accomplish. There's really no need to feel bad about it. It won't help. And if X was actually easy, you probably would have done it (or didn't know how important it was, etc.)