The trouble of lack of self-control in study.

First of all, you should have a clear understanding of this phenomenon (that is, the attitude we should adopt):

Of course not blind criticism. This is a normal phenomenon. As long as people have a heart, they are bound to be tired (influenced by environment, mood, physical condition, etc.) It's normal, there's no need to feel too guilty. Introspection, let bygones be bygones, all we have to do is try to grasp the present time.

Secondly, control yourself (that is, make better use of your time):

To control yourself, you need strong faith, and relying on yourself is bound to be lacking. So we should find something that can arouse our fighting spirit, for example, listening to inspirational songs, reading inspirational articles and posting inspirational slogans in some conspicuous places. Slowly discover which method suits you best.

Finally, we must be careful not to let the spirit be in a state of tension for a long time:

For example, in addition to learning some skills (mostly professional knowledge), read more leisure books and listen to leisure music. Proper relaxation can promote your future study more favorably.