Show willingness in your avodas Hashem. Show that you will serve Hashem every moment, every day of your life, even without the reward in Olam Haba. Even if you are certain that you will still be condemned to Gehinnom, all the same, you must do your part. Busy yourself with serving Hashem. Grab a good deed here, a prayer, or a shtickel of Torah there. And Hashem will do what is good in His eyes.
(Rebbe Nachman of Breslov)