If I am the source of thoughts, then is there any difference between the source and the soul? If it is the same, do bad thoughts affect the soul?
See, when do you realize that a thought is good or bad? You can realize this only when the thought has already come. You cannot stop a thought or know a thought before it comes. And when it comes, it also goes away immediately. If you are a witness to the thought, it simply drifts away and vanishes. But if you hold on to it and chew on it, then it stays with you.
Thoughts come and go, but that which is the basis of thoughts – is the atma (soul). And that is what you are. You are like the sky, and thoughts are like clouds. This could be the nearest example one can give. Clouds come and go in the sky, but can they disturb or limit the vastness of the sky in any way? No, not at all.
So when you fly above the clouds, when you go beyond the clouds, you see that the sky is untouched. It is the same, it is unchanged. It is only the thoughts which keep moving. This is what happens in meditation. When you come into Sakshi bhaav, i.e., when you simply become a witness to the thoughts.
We do not have to attach ourselves to the thoughts. That is foolishness. Whether they are good thoughts, or bad thoughts – they come and go. You are far above and beyond all this. This is called the Vihangam Maarg – it means rising above thoughts and seeing that you have nothing to do with these moving thoughts.