usage of refrain and abstain
No you are not correct and I am confused that you would think this was the case.
abstain - restrain oneself from doing or enjoying something
refrain - Stop oneself from doing something
Neither of these is good or bad, they are in fact neutral the only connotation is that what you are abstaining from is something enjoyable, it bears no moral judgement. And abstain does not mean that anything should be avoided.