Who is the best person to trust? Trust yourself. Trust your gut. Trust your personal taste in aesthetics. Trust your own moral judgement, your own ethics, without worrying that someone is “looking over your shoulder” or “watching your every action”.
No heaven or hell. No (conscious) afterlife. Every decision you take and make is a mini-experiment. You learn via “trial and error” with real decision-making what is “good” or “bad” for you (useful/harmful).
Your true judge is only you.