He's drowning in self-pity. 他沉耽于自怜. I feel depressed. 我感到沮丧.
I'm just a nobody. 我只是籍籍无名的小子. I'm just a peanut. 我只是个小不点儿.
I'm the low man on the totem pole. 我是阶级最低的人. Don't sell yourself short. 不要妄自菲薄.
Don't underestimate yourself. 不要低估自己.