In an alarming shift of mindset that is said to have occurred so gradually that he failed to notice it at first, Westport Data Systems senior manager and career-driven man Matthew Bowers expressed concern Friday that his identity was no longer exclusively tied to his job. I always saw myself as a high-performance individual who was focused solely on working my way up to VP, but lately Ive been worried that I may be developing aspects of my personality that have nothing to do with climbing the corporate ladder, said Bowers, 42, noting that he has recently observed in himself an unhealthy level of preoccupation with personal interests, activities, and relationships that can in no way give him a leg up professionally. Just the other day, I was telling my boss about my sons soccer gameat work, mind youand he responded by calling me a real family man. My boss called me that. It was a huge wake-up call. At press time, Bowers confirmed his intention to get back to his roots by leaving work no earlier than 9 p.m. tonight and missing his daughters piano recital. 