Can you give a specific example of what you want? "Doing, beginning, or finishing to do something oneself" is very general; and I normally use the phrase "to get used to" to mean "to become accustomed to", so I'm having trouble seeing what you are asking about.
Example: our first year graduate students are treated to a very nice picnic dinner shortly after they arrive. I usually say to them, "Don't get used to it. This is the last nice thing the department will do for you for the next six years." I mean: don't get accustomed to it.
Accustomed: Customary, habitual, usual. Customary: According to custom; commonly used or practised; usual, habitual, accustomed, wonted (obsolete use). [OED]
Synonyms (antonyms): general, ordinary (extraordinary), common (uncommon), frequent (infrequent), everyday, commonplace, conventional (unconvention), regular (irregular), stock (one-off) [Roget's 1911 via ARTFL Project]