Hard problems:

Hard 1: create videos in YouTube and earn money

Hard 2: get high scores in all of my subjects

Hard 3: learn neural network for changing major interview, read NLP articles and write a NLP article and post it to a magazine.

Hard 4: solve Codeforces problems and get high ratings on Codeforces, participating in ICPC

Hard 5 ( less important ): playing the piano on "Unwelcome School" "MariannE".

Hard 6 ( less important ): playing osu on 5 star maps.

Hard 7 ( less important ): learn drawing by tablet in PS/CSP to create anime pictures. Maybe take orders and draw commercial pictures?