Sure, if you wish. You could note the scores in a journal, a sort of average score for the day. Don't overdo it, rating your life hour by hour, as it can get introverting. This could be a useful record – for example, you suddenly realise that two months ago your days mostly rated plus scores, but last month was mostly red. What changed? Aha! New boyfriend. So dump him. After the dust settles, plus scores again.