This works for people who naturally have good social skills, but as a way of obtaining practice it seems rather unactionable - rather like "Step 1: be attractive; step 2: don't be unattractive".

It works for anyone who is honest and considerate of others.

No: it may work if you are honest (but know when the truth is harmful) and considerate of others (but are capable of telling when your attention is harmful). Mere good intention is nowhere near enough.