Stay close to God. His promise is to renew your youth.

Psalm 103:

Bless the Lord, O my soul;
And all that is within me, bless His holy name!
2 Bless the Lord, O my soul,
And forget not all His benefits:
3 Who forgives all your iniquities,
Who heals all your diseases,
4 Who redeems your life from destruction,
Who crowns you with lovingkindness and tender mercies,
5 Who satisfies your mouth with good things,
So that your youth is renewed like the eagle’s.