I talk out loud to myself all of the time. I even do so in public, sometimes. What I say seems interesting to me, but maybe it wouldn’t to others. Often I just say odd-ball random things, or repeat phrases or make odd noises. Just yesterday, my hubby came into the bedroom from his office asking who I was talking to. I just told him not to worry and that I was talking to myself and to “Go back into your office and leave me be!” And only 20 minutes ago, I was in his office with him and started to talk to myself again. He became annoyed and told me to be quiet (he was working), so I just went to my bedroom and shut the door, and began talking to myself again, happily.
Dialectical Behavioral Therapy (DBT) is a type of cognitive behavioral therapy used for the treatment of various illnesses and behavioral challenges from depression, to anxiety, anger/irritability, to bipolar disorder symptoms, personality disorders, and more. This therapy features various coping techniques to deal with these challenges falling under modules such as mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness (click 
Bird Flight 