Anyone able to relate or give me a possible diagnosis?

I have noticed lately that, in comparison to others, I don't have a lot of variation in my thoughts or activities. For example, when on the internet, i basically just have two or three websites that I go to. And I think I basically have a similar amount of stock 'thoughts' that go through my head all day. There's little variation in comparison to others.

Also, my daily activities are basically, sleep, eat, internet, maybe some bike riding.

I also sometimes get stuck with a certain phrase in my head and I repeat it every now and then.

Thoughts?