tenthirty,
None of the things you have mentioned per se would indicate you are going crazy what you put it.
It also somewhat depends on what you are telling yourself. And then possibly how often this occurs. Except you mention you feel incompetent for what you regard as really basic mistakes. While forgetfulness can be related to depression and anxiety, it could also be related to sleep. For example, one of the first thing my psychiatrist asked me was how well did I sleep, or did it wake up during the night etc. There are various bed time routines to assist in your sleep that might reduce your forgetfulness. Can talk about that more later?
When you are asked or told to do something, are you thinking about other things at the same time? Not saying you are not concentrating on them, but these other thoughts prevent you from really listening? Another example, my life can ask me to do something but I am really thinking about something at work that is bothering me, so I really only hear 1/2 of what she says.
But if you wanted advice, begin with acceptance. Acceptance of yourself and that you will make mistakes and cannot remember everything. I rely on FB for birthdays, my calendar for appointments, etc. If you are like me, and you set yourself up to do everything perfectly, you will invariably fail at some point. Embrace yourself for who you are.
We can talk some later if you like,
Tim
