Hey, it's okay to feel demotivated, it's okay to reach a step where you are stuck during days, weeks, months, even years.
We all know that.
Don't forget what may you come to this game : Fun by playing a video game
Keep that fun at the first sight. Change mods that you are playing, just play for fun in silly mods like basketball, cars or whatever. Then let it go.
Let it go for a while, then when you feel it, come back to what you are loving - parkour, sparring, aikido, mushu, or whatever - and take fun again.
Toribash progression is really slow, it is like a looong stairway, and sometimes you are stuck.
Just keep fun in your mind ;)