Ego

Today, I have been thinking about yesterday. When I easily let my ego get struck by words; that I thought were like knives. I have that problem which leads to my insecurity, and then turns into anxiety, and depression. How do I get rid of this side of me? I keep telling myself to stop being so pessimistic, not to let words bring me down. But it is too hard for me. Too much fear of being judged by the people around me with their thoughts or words, or even with their stares alone. I have been on this cycle for years now. Worst case scenario was when I wallowed myself in self-pity for a year. Surprised to say that I'm still standing despite being so tired. But for how long? How long am I able to cope with this? I need help.