I think about it
Pienso en ello todo el tiempo.
I think about it all the time.
Hace tiempo que no pienso en ello.
I haven't thought about it in a long time.
— El club de la lucha (1999)
Pienso en ello de vez en cuando.
I think about it from time to time.
Mientras más pienso en ello, menos me gusta.
The more I think about it, the less I like it.
I don't think about it anymore.