It’s nice to be a homie for yourself across time. It’s when you e.g. do something now that future you will benefit from, and then you appreciate yourself for that in the future. You’re like: “thanks for that man, good to have you around”.
Or when you arrive at some situation repeatedly in your life and you recognize the comradery with yourself in that. It’s like: “here again, huh? Come join the club!”. This can be most easily established if you have a ritual (daily, weekly, etc.) at a set place and time. You sense that you’re joined by past versions of you at that same spot again and again. The more you do it, the larger the community of you grows. ;)
You can literally feel companionship with yourself. Isn’t that crazy?
I call it being intertemporal. It’s being aware of yourself across time and treating this “whole you” with respect. In contrast, having the attitude of “that’s future me’s problem” is being not intertemporal and a jerk to yourself. Don’t be that.
Do things that future you(s) will thank you for. Appreciate the past you(s) for what they led you to. And if you don’t like what you were led to, break the chain now. Start making choices that future you(s) will appreciate. It’s current you on whom the responsibility always rests to change.
In truth, there’s only ever now so this whole concept is a bit wacky, but 1) there’s still truth to it in terms of right conduct in life and 2) it’s fun. Be a little playful with yourself, cuz what else is there to do?