Went from 1300 to 1400, how...? Advice to get to 1500?

So, I just reached 1400. From 1200 to now it's took about 2 and a half months. 

My question is, I felt really stuck at 1300 and I don't understand what changed in my play to get me to 1400 over these past few days. 

I've gone and looked at a few of my games and tried to see what changed, but I'm not seeing anything that jumps out at me. I want to keep doing what I'm doing, ya know 😅. 

I've been playing seriously for just a little over a year. Went from 300 blitz, to where I'm at now. 

I'm turning 24 on the 28th of this month, and am wondering when I'm going to hit that inevitable plateau.

Also, I would really appreciate someone looking at a few of my games and giving me advice on how I can make my way to 1500. 

Thanks in advance.