I would say this is a complex sentence. Because it has one independent clause(their more aggressive style did not pay of.) and two dependent clauses.
At a time when no luck was found. I got lucky. I got what others didn’t, a happy life. I know it may sound cliche
I would plan my schedule one week in advance. If you're learning a particular topic next week, try to grasp it now. If you're stuck, that's what your teacher is for. They won't make fun of you. They're here to help.
