The past is what you remember, imagine you remember, convince yourself you remember, or pretend you remember.

天地没有偏爱，对待万物像对待草扎的狗一样；圣人也没有偏爱，对待百姓像对待草扎的狗一样。

I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.