Does 3rd person reference to self change perception of self?
One way to think about this is called "self-distancing" (e.g., Kross &amp; Ayduk, 2011), which has primarily been studied in terms of emotion regulation.  Self-distancing is when you view your experiences from a third-person perspective.  This is generally considered to be an adaptive form of self-reflection (as opposed to rumination, which is generally considered to be maladaptive). However, as a rule, most things are neither purely adaptive or maladaptive.

Self-distancing is a relatively potent strategy for dampening negative emotions (Webb, Miles &amp; Sheeran, 2012) and is associated with reduced cardiovascular reactivity to negative experiences (Ayduk &amp; Kross, 2008). It's also associated with a reduction in intrusive thoughts and more problem-solving behavior (Ayduk &amp; Kross, 2010).

If you're interested in learning more about this, look up Ozlem Ayduk and Ethan Kross.