The key for success is effort you put in. If you want to have abs then you need to work out. If you wish to bea good driver then you need to practice. If you want to be a Christian then you need to take both good and bad that comes wih it.
"Trials are sent to some so as to take away past sins, to others so as to eradicate sins now being committed, and to yet others so as to forestall sins which may be committed in the future. Thesr are distinct from the trials that arise in order to test men in the way that Job was tested." - St. Maximos the Confessor