Let's keep things simple and just write a quick letter to your past self. You quickly jot down the stuff you could have done better, like leave a bit earlier and find out where exactly the show was first, then add some good motivational quotes from yourself to yourself to help you get there. You address it to yourself from this morning, stamp it, drop it in the mailbox, then immediately retrieve it again from your back pocket where you forgot it (still unread) from this morning when it got delivered to you. Right, time travel, of course, otherwise it'd be a time paradox. Well, turns out this clever plan was undone by your forgetfulness, but you take solace in the fact it was a very clever plan, indeed. For now, you might as well find out what parties are happening around here, and you have some great motivational quotes to help you enjoy where and when you are instead of worrying about where and when you aren't.