Behavioral change-focused relationship marketing firm HealthMedia announced today that it has acquired the consumer Web site MySelfHelp.com.Financial terms of the deal were not disclosed. MySelfHelp.com will retain its office and staff based in Northborough, MA.With the acquisition, HealthMedia adds MySelfHelp.com’s programs for depression, insomnia, and other behavioral health conditions to its client offerings.Ann Arbor, MI-based HealthMedia’s clients include Pfizer, GlaxoSmithKline, AstraZeneca, Eli Lilly, Takeda, Kaiser Permanente, Cleveland Clinic and others.