There is nothing inherently wrong with thinking, but incessant thinking blinds most people to THIS--to what is happening in the present moment. Most adults become so lost in their minds that they rarely interact consciously with the real world. If you have to think about something, then think about something, but when thinking is not necessary, shift attention away from thoughts to what you can see or hear. Spend some time looking at the world like the lens of a camera, without knowing. If you find yourself fantasizing, shift attention to what you can see or hear. If you find yourself thinking about whether you are making spiritual progress, shift attention to what you can see or hear. When you go for a walk, silently look at the world around you without naming or cognizing anything. Whatever you have to do do it consciously, with full attention, and ignore internal speech. If you are washing dishes, just wash the dishes and don't daydream. Most adults daydream their way through life and never fully attend what is happening now.
If the mind is so "noisy" and engaging that attention cannot be shifted to sensory perception, then do some breath awareness exercises to create some mental "space."
If the mind is so "noisy" and engaging that attention cannot be shifted to sensory perception, then do some breath awareness exercises to create some mental "space."