This right here is what makes it roleplaying.

You as the player know what to do to move the story forward. Just need to figure out how the character you built would go from Point A to Point B, then roleplay doing it, even if it means they bumble their way through it like a clown.

Let the DM worry about what skills you need, if you even need them at all; the only thing the player has to do is describe their actions and their intentions.

A good DM will make sure you fail forward.