Reflecting on past experiences helps us see where we can improve and reminds us of our earlier efforts. It's normal to notice changes over time, like physical appearance and life circumstances, which can bring a sense of momentum. Looking back, we realize our past self didn't know as much, a theme in 'Ego is the Enemy.' Despite growth, the speaker values feedback and constantly strives to do better. In sales, emphasis on external results can lead to self-judgment, but recognizing personal effort is also essential.