As I Heard Them, Vol. 1, p. 285, no. 3
Reb Aizel used to say, “We are not able to have bitachon, trust in G-d. What is bitachon? When I have a good friend and I do whatever he asks of me, then I trust that he will do whatever I request. But when I do everything the opposite of what he asks, then how can I be trusting? Yet I have emunah, faith, that G-d is good and desires kindness; if so, He will certainly fulfill my request.”