In his perfect timing, God will comfort you and exchange your mourning for rejoicing (Jeremiah 31:13).
Faith conquers fear! Some translations of John 14:26 refer to the Holy Spirit as Comforter; other translations say Advocate, Helper, etc.
Grief is painful and looks different to each of us. Yet, those who have died in Christ are in his presence right now. Let that comfort you.
God comforts us in our mourning (Matthew 5:4). This seems to imply that life isn’t always a breeze; we can expect to encounter tough times.