Maybe, for today...and tomorrow...You can tell your soul to be happy. To ENJOY the celebrations. Stop resisting, acknowledge the disappointments and find the JOY anyway.
David often, in Psalms, spoke to himself, his soul and commanded it into submission--even emotionally. Perhaps, focusing outward, instead of inward...find a way to bless another, even with your own smile and Joy, will offer some comfort during these challenging times.
Psa 103:1 A Psalm of David.
Bless the LORD, O my soul;
And all that is within me, bless His holy name!
Psa 103:2-5 (it's worth reading this ENTIRE CH) Bless the LORD, O my soul,
And forget not all His benefits:
Who forgives all your iniquities,
Who heals all your diseases,
Who redeems your life from destruction,
Who crowns you with loving kindness and tender mercies,
Who satisfies your mouth with good things,
So that your youth is renewed like the eagle’s.