I have to revisit this subject every now and then more for myself than for anyone else. Rule 1 - nobody knows nothing - including me. Rule 2 - when in doubt trust your instincts - if it feels wrong it is wrong and no amount of hoping can make it right.
Rule 2 of course is the corollary to rule 1 and the whole package means be true to yourself.
If you follow those two rules in life as well as in investing you will probably come out OK.