1. Suspect the worst in everyone.
Future actions, past motives. Cover all branching possibilities to a depth and breadth in proportion to subject's power to harm, irrespective of any probability-based risk assessments.
2. Assume the best of everyone.
...& Act Accordingly, of course! Act bold, and in accordance with their best possible motives for the past act, and their best possible intentions regarding future acts. This basically fucks up their plans and has 'em scrambling to put a better face on what all they already done! As soon as they can see they already got you fuckin' fooled. The onus is all over them, at that point.
Make it easy on 'em! That's the trick here, basically. Don't let on about how fucking suspicious, and in fact - you really don't even have to bother with Step 1. If you're in a hurry, skip it. Step 2 is where the magic happens.
And as to the people who aren't taken aback and scrambling, shot through with pangs of regret because they really secretly do want to be the bad guy to you, and are now salivating over how deep you've grown the profuse wool they think they've sown 'pon the fertile fields of your innocent brow, eyes-wise?
WHUUT! Can you repeat the question?
I believe you know full what to do for those people. VERY WELL.
We'll cover it in a later post. Hehehee