As other people are saying, that's the point of meditation.
I just started a book, The Art of Living, by Thich Nhat Hahn and he claims that most people don't choose to think their thoughts, thoughts just appear, just like the wind on a rainy day. You can't stop the wind from blowing and you can't stop thoughts from appearing.
The point of meditation is to learn not to 'think' the thoughts that appear.
By tue way I did try this for a year and while i do get the point of it I did not succeed yet.
Appreciate the offer, but I'm all good. It's more that my thoughts just race and leap from one subject to the next, and it gets extremely tiring to deal with if I don't have something to distract me.
That wont stop by ignoring them. But with practice, over time like building a muscle, meditation will quiet the mind.
Forget 90 minute sessions, you can meditate 1 minute, 2 minutes. No special setting or place required, anywhere comfortable and quiet. You can do this a few times a day, youll notice slight improvements in aa little as a week or so.