2 weeks and...
... this is one of the best decisions in my life.
1st) Writing down every single expense, subscription, that I had, made me realize of how little I wanted some of the things I've been expending.
2nd) being able to set goals, is helping me out of reaping being aware that the money I have, had something to do: "wait there until it's the time to use it".
Overall, I'm extremely happy with this, as is super easy to use, and super rewarding, as it encourages to think of future me, and plan for future me happiness (which bring happiness to current me!).