Deliberate practice is often the opposite of enjoyable. I like the term “stretch” for describing what deliberate practice feels like,

Doing things we know how to do well is enjoyable, and that’s exactly the opposite of what deliberate practice demands….

Doing things we know how to do well is enjoyable, and that’s exactly the opposite of what deliberate practice demands…. Deliberate practice is above all an effort of focus and concentration. That is what makes it “deliberate,” as distinct from the mindless playing of scales or hitting of tennis balls that most people engage in.

Deliberate practice requires conscious effort and attention toward specific and challenging goals. Habits are your current self; deliberate practice is focused striving toward your desired Future Self. Reverting to habits or your comfort zone isn’t how you advance.

It is when your practice is rather greedy that you become discouraged with it.

Those views of life which deify pleasure are less likely to yield it.

I'm just sayin', I don't like fun

It is not possible to have fun when you try.

The philosopher's school, ye men, is a surgery: you ought not to go out of it with pleasure, but with pain. For you are not in sound health when you enter.

Another mistake will be to practice for the sake of the joy you find in it. Actually, when your practice is involved in a feeling of joy, it is not in very good shape either. Of course this is not poor practice, but compared to the true practice it is not so good.

There is always something about conscious tact that is very irritating.

My theory is to enjoy life, but the practice is against it.

Rudeness is not "having fun", and if it is, it's at the expense of another person.

There’s no fun in fightin’ fer people when everything yeh do — no matter what — ain’t done right.