Dealing with Grief: Tips Needed

My mom died about a year ago. with the upcoming anniversary, writing or even being made aware of the date gives me this feeling that I wonder if anyone relates to. I feel tense, my chest tightens, my nostrils flare. I feel almost like I’m preparing for it all over again. She had cancer, we knew it was coming. I adopted her cat on the 7th, my mom gave me a pink lamb that was given to her mom when she was born on the 12th, my sister flew home on the 16th, my mom’s lungs collapsed on the 18th, and she passed the 19th. Somebody give me some tips with grief, thanks :/