Special moment? Do anything you can to preserve it. Take a picture, scribble a note or steal a memento. Mark the occasion with celebration. Indulge in vice or break your own rules if you have to. Whatever it takes to help you hold onto the moment forever. Do not count on memory; it may fail you later. More likely than not, your recollection of the event will lapse from relevancy. Even the slightest trinket or scribble can help it all come back when you least expect it. Life is made up of poignant moments. It is important to revisit, track and learn from them. Nostalgia helps you recontextualize the things that are most important in life. If you collect anything, collect memories.
Sometimes the most effective way to move on in your life is to let things go. Identify the people, places, and things that make you unhappy or hold you back. Surmise a life without them and calculate out how to get there. Throw away the trash, any relics that tie you backward, your toxic environment, or regressive relationships. Dump all the weight on your shoulders over the side. Only then will you truly feel free to take the next step in full. The more you let go of at once, the more dramatic your acceleration forward will be.
Like monkey bars on a jungle gym, you must let go of the old to reach the new. Empty your pockets, cut the ropes, and ignore the shouts as you leap forward. The only person who can move you forward is you.