Doing sounds more positive than trying because struggling has been removed.
However, doing usually entails self-consciousness.
Doing involves the use of willpower.
Willpower is the act of forcing; attempting to re-shape reality to suit your own design.
The whole point of taoism and tai chi is that it is not about you.
You must move as part of the situation, rather than regard yourself as the lead role or focus of attention.
There must be no division between yourself and another.