Does true learning only occur when we experience difficulties?

There are two types of learning, one of them is from school, other one of them is from real experience. No matter what, these two are affecting our life, and they could change ourselves like personalities or some other facts. Furthermore, both of them are very important that's could affect the future.
From school, we learn from books, notes, homework, and classwork. Some people study just for passing, getting a C for grade, they're fine. Some people study hard for getting in a nice university by getting nice GPA, and getting a good grade at the SAT. There are very few people that can really figured out what's the job that they are wanting to work, and started to learn everything since very young. Of course, if people does this, that could really help out for the job and for knowledge, cause you pay the best attention to whatever you have been wanting to do. On my mind, I think life isn't only about books, it's about both books and experience. Just like science, we get tests, work for class, and most importantly, there are labs to do. Purpose of lab is letting student to face how is one thing works, and really learn what happened, and put school works that we learned into the lab by answering question at the end and have us to think over about the lab; Letting us to understand the concept by experiencing it.
What I'm trying to say is, lab is like life, books can never teach you everything, you can't learn socializing, managing things, outside skills, etc. Facing problems that's in front of you can make you learn the most. You'll deeply remember what happened after days. More likely, people get more mature when they get older, by that, you could go back and remember what you did when you were facing a problem that happened before, you might think that you could have do something that's different than what you did. Than you'll remember to warn yourself from not having this happens again at the future.