Hello, Codeforces. After spectacularly losing CERC, I've decided that the only way to advance further is to reach 2600.

So I'm interested to hear about the best/fastest/most reliable techniques to reach IGM. Should I upsolve at least one task each day, or should I focus on upsolving full contests; should I pick tasks by difficulty, or should I even upsolve atcoder's Div1 and AGC ? Should I force myself to follow a schedule ? For individual tasks, should I try to solve them for a fixed amount of time and then read the editorial ? Is it okay to extend the time if I feel close; is it okay to stop the timer earlier if I feel that I have no clue at all ? Is it okay to spend a day on a single problem ?

Or is everything worthless, and is it natural talent only ?

UPD: not to be rude, but I am more interested in taking advice from people who have reached this rating, so they can share their routine and struggles.

MikeMirzayanov Please add the ability to block invitations to teams or in general to ban certain users.

This user sent 3 invites to his "team", I rejected all of them, but I cannot stop him from doing this.

And please ban this user darory.