As another has already suggested, antidepressants can help. See a GP, have a chat. It's good to talk. If you don't fancy that road, still try to talk. To family and friends. There is simple breathing meditation, instructions easily found on google. Keep at it, Rome wasn't built in a day. The benefits of a quieter mind will gradually become apparent.
Stay strong, be positive, nothing lasts forever. There is sunshine ahead - life is full of surprises and unexpected blessings.
All the best.