It is not the thinking of thoughts (i.e., the mental experience of information) that proves being but rather the experience of the thoughts. I do not know the next thought that will appear in my consciousness, so how can I take credit for creating these thoughts? And how can I therefore prove “my” existence because these thoughts exist? And yet, it feels as if I have creative ownership of these thoughts somehow. Perhaps, this feeling of ownership is an erroneous assumption that gained legitimacy with the passage of time. I suppose it is also possible that I do in some fashion create my thoughts on a subconscious level. Even so, it is a subconscious creation and therefore my conscious mind cannot claim ownership. In any respect I must conclude that I experience thoughts and not necessarily create them or put another way, I experience thoughts, therefore I am.
Perhaps my thoughts come from multiple external and internal sources and I am a hub in which these thoughts can be experienced. In my experience of thought, I can express a preference as to my thoughts. Some thoughts are pleasurable whereas other thoughts are distressful (for example). I can more readily lay claim to this exercise of preference because I experience it immediately. As with most things I experience, I can tell right away whether I prefer it or not. Somethings require deliberation (and perhaps I can lay claim to the deliberative process as well). This is what I refer to when I say “I” or “me”. That is, I am a hub or intersection point that has the ability to experience thoughts and express a preferences related to said thoughts. But I am not the creator of the thought nor am I the thought as might be tempting to suppose.
If I am merely the experiencer of thought and not necessarily the creator of the thought, then I need not feel ashamed for the mere experience of any thought that crosses my mind. Of course morality comes into play in (perhaps) the preference and the (more certainly) choosing to act on a preference, but not the experience of the thought itself. And some thoughts are tempting to pursue in the short term but give rise to greater problems in the long term. Experience teaches us (if we have the capacity to learn… which I can also lay claim to as “I” because it is an intrinsic quality) how to differentiate between these things.