The power is gone again???

You sit down in your car and the first thing that happens is a stingy pain in your chest.
Followed by that, a piece of paper appears right in front of you. As you look at it, some words appear. Of course you begin to read them, just to realise, that it kinda reads itself to you. You hear the words, which are written on the paper, while they appear.

"Greatings mortal...

just kidding. This text is written by you. Well, me. I mean, I am you. The future you. I remembered this morning, sitting in the car and sent this note back in time to myself.
Now, dont freak out, but I made some changes for you.
And knowing myself, I had to take away your powers.
DONT freak out, you wont need them. I already took care of everything, and as a plus, I made us immortal, so that in the worst case, you get the powers back as soon as school end and we can fix it then.

But lets get to the point.

I want you to go to school. Just pretend like it is a normal day. I already changed everyones mind, so they think your new car is normal.
I wont spoil it for you, but the day is going to be awesome.

Oh, and if you dont get something, just ask. I made it so noone is suspicious of you not knowing things, which are totally normal for them. But I promise you, it will be more fun, if you find out the things how I planned it. So only ask for explanation, and not for what is going to happen next, okay?

So enjoy the day. At least do it for me, so I get the memories of it. If that is how timetravel works. I am still confused, but you get this, too, tonight... enough of this, have fun"

And with that the paper burst into flames and disappeared.

"Okay... weird... so I was almighty... and took it away from myself? I guess this solves the question if I could have made a rock I cant lift myself. Apparantly, I can."

You came to the conclusion, that it is useless to think or be angry about yourself for taking away your powers, so you just drive to school.