I have accepted that I'm naturally a nostalgic person. I get so attached to past memories and feel empty when it hits me that I'll never experience them again. Little things will trigger these memories and all of a sudden, I'm overtaken by intense feelings of nostalgia.
I lost many friends because I couldn't live up to their expectations. Couldn't be with them in gathering/hangout. Couldn't text/call them properly regularly. Couldn't be as friendly as I used to be. Couldn't compromise because I lacked energy. Became blunt because