When Ты want to make a simple или hard decision, do Ты rely on yourself или ask for opinion?

Depends on the decision tbh. Mostly I just make the choice myself. Like I'll ask for opinions but tbh I don't know why I do because I usually just end up doing what I want anyways.

I'll piggy back of Zanny's answer on the subject. The only time I won't just do what I want anyways though is if I'm specifically asking someone something due to their experience with that particular thing.

I always ask other people. Even if I don't plan on doing what they say I like to hear how other people feel about the scenario and what they would do.