characteristic; like oneself; worthy of oneself
それが自分らしい選択だ。
That is a choice characteristic of me.
本音を言えたのが久しぶりに自分らしかった。
Being able to say what I truly thought was the first time in a long time that I felt like myself.
人に合わせてばかりでは自分らしくない。
Just going along with everyone else is not like me at all.