Started a 'brag doc' three months ago and my 1:1s are completely different now
Simple idea I stole from a blog: every Friday I jot down what I shipped, what I unblocked for someone, any bug I chased down. Two lines, that's it.
Come review time I wasn't scrambling to remember what I did back in March. My manager also stopped having to guess at my impact because I just... had the list. If you're junior and quietly doing good work nobody sees, start one today. It's five minutes a week and it pays for itself the first time someone asks what you've been up to.