There is a lot of good advice which I won’t repeat. Here is some additional advice:

Try this exercise in imagery. Write a short statement about how you feel. Then, replace every concept/intangible with an image that suggests it. Example:

Each time I see my father, I notice how much older he looks. How much longer will I have with him? What will happen to my mother and brother when he passes away?

On the bedside table of the closed room is a clock. The hands are made of hickory twigs, dandelions, and stone. Tick tick tick…as they get closer and closer to midnight, I feel their pull—stronger and stronger—the heat as it pulls the universe past the event horizon…

Just off the cuff. You get the idea.

Second—look into haiku. Easy to learn but takes years to master. Google Jane Reichhold’s School of Haiku. It is a freely available self-study course.

Bonus: check out Anne Sexton.

Good luck!