As a fellow Scot, I noticed your wee touch of Scottish there. Scottish equivalent of this is captured in the expression: "Yer a lang time deid". I've been in Sweden for 17 years and speak Swedish fluently but I find that when I make mistakes, Swedes (including my husband and our 16 year old daughter) don't correct me because they know what I'm saying. Just little things really - mainly prepositions. Duolingo has helped me a lot with that.
Carpe diem is a common theme in literature, expressing the shortness of life and the need to accomplish something enduring today. https://interestingliterature.com/2016/11/02/10-of-the-best-seize-the-day-poems-in-english/