The holidays are difficult when losing someone. Grief can be isolating. The fact of the matter is that a lot of us don't know how to cope with grief. Some people tend to cry, other people do not talk, some may use distractions to cope, just to name a few. Grief is not a straight path to healing.
The first thing that helps is acknowledging your feelings and emotions. Your feelings and emotions are valid. Allow yourself to feel them. Your feelings and emotions can change from one second to the next. There may be a memory that pops up, a scent, a song, a place. Take it all in. Even if you cry, get angry, experience disbelief.
Try to process your feelings and emotions by talking to a friend, family member, therapist, writing in your journal, prayer, etc. You can also write a letter to the person who is no longer here with you.
Set clear boundaries with family and/or friends regarding the loss when it comes to bringing it up. This can be done prior to meeting with family and/or friends. Remember: if a person gives you pushback when setting a boundary, they are not honoring you, your needs, your feelings.
Lastly, give yourself grace. How? By taking it one day at a time. By understanding that you are human and healing will take time. It is not a sprint, it is a marathon.