Hi ,
Consult a Psychologist for an assessment,
Talk about your accident , the injury your feelings , emotions , thoughts .
Counselling and therapy will help you gain clarity understand the underlying reasons following which you will learn skills to manage these feelings effectively.
In the meantime try relaxing and letting your mind and body rest , be compassionate-kind to yourself , mindful of your own emotions, the good and the bad.
In taking these steps to change you will find yourself feeling better and be able to manage your thoughts effectively in a positive manner.
Next Steps
Consult a Psychologist.
Health Tips
Focus on positive thoughts- affirmations, Practicing deep breathing , meditating good sleep hygiene.