I've failed several times by that metric, and statistically everyone does who tries. So you should attempt not to feel deflated by where you are, though I know

I've failed several times by that metric, and statistically everyone does who tries. So you should attempt not to feel deflated by where you are, though I know that that is much much easier said than done. (I have now semi-retired, early, and have started a PhD, and my kids are teenagers, and I am having plenty of fun, so this seems an acceptable sort of 'failure' to me!)