Do you have any regrets as this program is coming to an end?

If you have any regrets about yourself in this program,
what is that?
I think I could have reviewed the class more eagerly.
I wrote down many things during class but did not really study them again.
But at least, I have them and I can refer to them when I need to.^^
And except that, I am pretty much satisfied with what I have done here.
I know me and I think I almost did my best. If I hope more, that can be too much.
So , what are your regrets?