Gestalt Therapy was developed in the 1940s by Fritz and Laura Perls, and further influenced by Kurt Lewin and Kurt Goldstein. According to Perl’s, people are not made up of separate components, rather he states that human beings function as a whole. In doing so, one defines who one is (sense of self) by the choice of responses to environmental interactions (boundaries). ‘CBT was first developed in the 1960s by a psychiatrist named Aaron T. Beck, who formulated the idea for the therapy after noticing that many of his patients had internal dialogues that were almost a form of them talking to themselves. He also observed that his patients’ thoughts often impacted their feelings, and he called these emotionally-loaded thoughts “automatic thoughts.” Martin also explains that Beck originally named CBT “cognitive therapy,” because it focuses on each patient’s thought process.