Emotion regulation strategies
Psychologist James Gross has studied how we manage our emotions. Strategies such as reappraisal (looking at a situation from another angle) and acceptance tend to protect mental health, while habitual suppression, rumination and avoidance are linked to more stress, anxiety and low mood.
Exploding isn't the same as expressing: venting with aggression usually increases anger. The good news is that regulation is a skill, and it can be trained, for example with therapies such as CBT or DBT.