Overcoming grief takes time, support, and self-compassion. Talking to others, joining support groups, journaling, or seeking therapy can help. I’ve found that honoring the loss while slowly rebuilding brings healing.
Support is very important to overcome grief. The person who is in grief is in such vulnerable position that they cannot reason, they lose hope. If you have it, you need someone to comfort you, if someone close to you has grief, you need to comfort them. One strategy that actually works is you should never leave them along and always communicate about nice things.
Well, grief does not only cause mental issues, it also has physical consequences, for instance if you are under grief for a long time you might experience shortness of breath or chest pain. In a situation like this you might have to see a doctor immediately.