"You need to have emunah and bitachon."

"The answer to this question lies in understanding the distinction between emunah and bitachon. The Rambam defines emunah as the knowledge that HASHEM created and continues to run all of Creation. Simply put, nothing can exist and no activity can occur without HASHEM. Bitachon, however, is ... quite different. The Chovos Halevovos defines bitachon as trusting in HASHEM. It is a sense of relying on HASHEM to watch over and protect me, as if to say, 'I take my heavy burden and place it on HASHEM.'" (source)

"Bitachon now is the exhaustive series of security checks one passes through before boarding an El AL flight and, in Israel, before entering a shopping mall, café or post office." (source)