People post a lot on Twitter – this is, generally, a mistake, I think. You should be exceptionally cautious about building up a tweet history, and every single tweet should be done carefully.
Do you tweet from bed before you fully wake up, and then find yourself deleting a lot of those later (an actual behavior a journalist... bragged about? hard to tell, but no need to embarrass them by name)? Probably best to log out from your phone.
In general, the world is a strange and fragile place. Build a walled garden, if you can. Be courteous, respectful, and measured.
Read people you respect on Twitter. Use a pseudonym. Be positive and support the endeavors of people.