Since you are awared that u r too narrow minded then be more
open-minded loh. 
Then your mind will be much more receptive to doors of
possibilities.
You can also try to analysis the matters objectively than getting
too personal with it.
Ok, what do u mean by bad thought? If you have done nothing bad,
your consciousness will not be there disturbed. If you did
something bad, your consciousness will not be calm as it will be
disturbed by negative emotion.