Do you guys believe the phrase: There's no try only do.
The screenwriter who derived those words for Yoda was playing metaphysical word games. HIS apparent meaning was to not play around and test yourself by dipping one toe into the hypothetical waters, just dive in. Trying, according to some grammatical constructs, means testing or proving- and that could have been the intent in that little speech.
Yoda verbalized a basic motivation - don't fuck with it, just do it - in current terms; and that was germane only to the plot of the film. I don't agree that one can dictate that in real life. Trying, or attempting something you haven't previously done,
IS doing. Don't let fancy verbal footwork run your life. So perhaps a better lifestyle suggestion would be to not waste your time worrying about it, messing with it or trying to calculate endless possible scenarios; just jump in and get involved with the actual doing.
Nilstreet said something very succinct in his post about learning from errors.