I would also like to point out that I feel pleasure after working through a day in a disciplined way that doesn't waste time. So "disciplining yourself not to

I would also like to point out that I feel pleasure after working through a day in a disciplined way that doesn't waste time. So "disciplining yourself not to waste time" isn't always to gain pleasure later, but can also generate direct pleasure. At least for me. (my $0.02)