Which theorists explain personality through concepts, such as learning, imitation, and reinforcement?

The answer to this question is behaviorists

behaviorists theorist believe that human personality is shaped through continous learning in our questi to be the best version of ourself.

In order to improve, the three basic method that we often used are through learning it by outselves, copying other succesful people (imitation), or conditioning ourselves in order to get used to a specific mindset (reinforcement)