going out tonight! but nervous!

So a good friend of mine invited my husband and i out to dinner for her husbands surprise bday party at a restaurant. I haven't gone out in forever since my loss last December and I'm feeling really anxious about going out cuz it will be with a bunch of there family and friends we don't know and I've pretty much haven't socialized in this kinda of setting for   Almost two years. I love these people so much so I'm pushing myself to go but I'm really nervous. Any ideas how to feel less anxious and just actually be able to enjoy myself?!