Be sure to complete tasks in the short to medium term

Because of a company's hiring needs, I had to finish most of a training institute's tutorial. I concentrated and finished it in 13 days, studying a week's worth of material each day (about 2 hours of videos), occasionally resting for two or three days in between. Most of the time I played the videos at 2.5x speed (PotPlayer can precisely control playback speed). Completing a large amount of work in a short time felt great.

If I followed the course schedule and watched 2 hours of video per week, I would watch only about ten minutes each day. Extending the cycle too long means you won't get substantial positive feedback for a long time, and when you finally finish the work after a long period, the sense of satisfaction is weakened by the long cycle.

When you are forced to finish a task in a short time, you have to grasp the most important parts.

At first I set myself the goal of finding an internship with a one-year timeline, painfully watching English lecture videos every day. Because my listening level wasn't high enough, I often zoned out and had to rewind. After watching one video and trying to summarize it, I found that after an hour and a half there was so little learned that I wanted to beat myself up. Video is the least efficient method. Now when I study open courses I read notes; although notes don't cover the entire learning scope, they're enough. Reading notes lets you learn 80% of the content in 20% of the time.