It's just a lot of practice. Pay attention to something you want to remember. Then recall it a bit later. If you are watching a movie, you literally have to no

It's just a lot of practice. Pay attention to something you want to remember. Then recall it a bit later. If you are watching a movie, you literally have to note an interesting dialogue as something to recall later. Then try to recall it later. But not in your own brain. Talk to someone about it. Repeat a 10k times with different types of things over a few years and your memory will feel great.