1. Meditate on death everyday when you wake up. Face the fact that you will die with help of a belief system that helps calm anxieties about death. Termed Terror Management Theory (TMT), it helps reduce existential anxieties. In the framework of the christian afterlife of resurrection and judgement, it also makes you more motivated to do the tasks that promise a better afterlife.
2. Through ruminating on the suffering of others and explicitly realising emotions of empathy repeatedly would overtime make such reactions a second nature applied in real life.
3. Attributing boredom (or rather distraction) to an external malevolent force helps better combat it.
4. Performing 'living funerals', meditating on their life as if they might die now, before going to sleep to help gauge their life and maybe how happy they are with the direction.