Drich,
Here's the thing. Either you are right or, you are delusional. If we accept that it is extremely common that delusional people are incapable of recognizing their delusions for what they are then I am afraid you cannot be certain.
If you are certain then you are delusional as a non-delusional person would always have to make allowance for that possibility. This is not something you need to come back to me/us on. You need to question yourself. If the real answer is that you are absolutely certain then you should seek help.
Here's the thing. Either you are right or, you are delusional. If we accept that it is extremely common that delusional people are incapable of recognizing their delusions for what they are then I am afraid you cannot be certain.
If you are certain then you are delusional as a non-delusional person would always have to make allowance for that possibility. This is not something you need to come back to me/us on. You need to question yourself. If the real answer is that you are absolutely certain then you should seek help.