My Skepticism as It Pertains to Psychology/Therapy

After spending some time in therapy as a student/athlete during my teenage years, I've developed a moderately cynical perspective of psychological analysis in the health care industry. I personally find very little to no value in attending sessions with licensed psychologists. I am of the opinion that everyone (aside from those with severe hormonal/physiological imbalances/disorders, which can be treated by medications prescribed by psychiatrists) can effectively improve their mental condition by adopting an internal locus of control and taking deliberate action themselves. Still, I recognize that others achieve positive outcomes by visiting qualified mental health professionals. Although I think most of the progress patients make with psychologists emerges from concepts like the power of suggestion and the placebo effect, rather than tangible/verifiable treatment strategies. And I say this as someone who is far from an advocate of existential nihilism; I unequivocally believe life has meaning and that what we say/do matters. I just don't believe behavioral therapy actually creates solutions to solve problems related to mental health, at least not directly. More importantly, I don't think therapy can benefit a pessimist like me who considers psychology to essentially be nothing more than a pseudoscience. Moreover, I am of the firm belief that mildly depressed people enduring a variety of hardships like me can still live as functional human beings and productive members of society (without psychological/behavioral intervention).