Often times friction is a good thing; because, it makes you really really critically assess how much you care for something or not. For example, things you do not regard as insanely insanely critical, even if there are roadblocks, means the ultimately you don’t care for that much!

Or in other words, friction and obstacles is good because the challenges you to think about how critically you care for something. This means:

Obstacles or annoyances are good, because they truly show you what you truly care for and what you don’t care for!

For example, let us say that you think you care for some thing. And then when you’re about to do it, you hit some roadblocks or annoyances or obstacles — and ultimately, you hesitate, it is a sign that it ain’t really really worth it.