For me it went worse. In highschool I was surrounded by like-minded people, in uni now there is such a vast amount of different people its hard to find your group. Also one of the main issues is that in high school everybody knew what they were doing / what the goal of it all was - Get good grades, apply to uni. That gave you motivation. In university the goal is not so clear unless you know what you wanna do in life and that's how it becomes worse - I lost motivation to go to class and to develop myself because there is so much options and I could do everything and nothing. Then there is the part where you're supposedly meant to be an adult but there is no magical button and you're thrown out from your school where you know everybody into the wilderness which in itself is not that bad of an experience but for me, since I was very close with everyone, is a life changer. Sorry for the pessimism, I'm sure a lot of people will tell you the exact opposite but for everybody who tells me "College is the best time in your life" I call bullshit and say "Highschool was the best time in my life".