Найдите в данном предложение отрицательные и положительные…

Найдите в данном предложение отрицательные и положительные предложения в данном тексте: I think that if you are interested in something, you do it with a lot of energy and enthusiasm. I enjoy collecting stamps and this takes up all my spare time. For me collecting stamps is not just buying them. You learn a lot about different people and events. But you have to find time to read a lot. Unfortunately this hobby is very expensive andyou cannot buy all the stamps you want. To be a good stamp collector, you need to have a good eye for detail. That's because if you notice any printing mistake on a stamp, it becomes more unique and valuable. Whether the mistake is in the printing or the design, it doesn't matter. The important thing is that you notice something which many people miss! It is very exciting! When a stamp is issued and there is a mistake in it, a new stamp appears and the old one becomes very rare and valuable.