When you say "approaches" do you mean the THEORETICAL BRANCHES within the field of psychology... or TECHNIQUES/INTERVENTIONS applied by psychologists?

If approach = theoretical branch, have you considered:

Gestalt, Experimental, Humanistic (www.ahpweb.org), Rational Emotive (www.rebt.org), Behavioral, and/or Group (www.yalom.com) models?

If approach = intervention, how about...?

talk therapy
sand tray, play, or art therapies
hypnosis
phototherapy (for those seasonally affected)
NLP
referrals for medication, ECT, hospitalization