Be happy, for Allāh ﷻ promised you to be in Jannah. Believe and don’t be hopeless. Hopelessness is from shayṭān. Shaykh ‘Abdu-Llāh ad-Dāghistānī used to quote Qaṣīdah al-Burdah: “Good tidings for the Muslims. They have an unbreakable pillar to hold on to.”