じぶんへの戒めとして、書いておく(笑) · 2026年11月7日
難しいと思えることも、やればできることと裏表の同じものだったりする。
Things that seem difficult can turn out to be one and the same as what you can do if you try, just the other side of it.
This is a single たり with no second item listed, attached to the past form of 同じものだ. It isn't listing actions: it softens the claim to "can turn out to be the same thing." The writer avoids a flat 同じものだ because he is offering this as an observation from experience and not a rule that holds every time. Learners who expect the textbook A たり B たり pattern may look for a missing second item, but there isn't one.