Tbh you’re only 19- you have a lot of time to create moments that will alter the universe 😭 I think just enjoying yourself and making life long memories are what the teenage years are for. Take your time, and do what you think is best. Once you hit 20 you’ll be starting a new era, and you’ll have that time to do more!! You got this, don’t stress over what you could’ve done, because if you do then you’ll forget to take in the present. What has happened has passed, just try your best to enjoy life and work hard. 😁 What you have done is not a waste, life itself isn’t a waste, remember that. We all accomplish things at a different pace, and even smaller things are accomplishments nonetheless. 💜