It is said in psychology that thought and behavior are nearly one and the same, by symmetry so too are being and doing. To simplify, reduce your apprehensiveness to zero
Or: How to explain Zen to a physicist
There is no trying to be a good person, there is only being and practice.
Or: Practice is the same thing as trying, if you’re not practicing you aren’t trying. You can’t fail at practicing, because failure is integral to practicing. You can only stop practicing.