Here's Scripture to mull over while you think on that:
"And even to your old age I am He; and even to hoar (white) hairs will I carry you; I have made, and I will bear; even I will carry , and will deliver you." Isaiah 46:4
"Thou shalt guide me with thy counsel, and afterward receive me to glory." Psalm 73:24
"Jesus answered and said unto him, If a man love me, he will keep my words, and my Father will love him, and We will come unto him, and make our abode with him." John 14:23
Near the end of the Bible, in the Book of Revelation, we read," Behold! The tabernacle of God is with man." At the end, after everything is over, God has made a Covenant that He will abide with converted man forever.
"Even so, come, Lord Jesus."
Julian of York
"And the work of righteousness shall be peace; and the effect of righteousness, quietness and assurance forever." Isaiah 32:17
"For thou art worthy, O Lord, to receive glory, and honor, and power. For thou hast created all things, and for thy pleasure they are and were created." Revelation 4:11
PS When you said," You will always be glad and have joy", I am sorry to differ with you. As a matter of fact, Paul said "That through much tribulation we shall enter the Kingdom." Peter said,"Think it not strange, concerning the fiery trial which is to try you, as though some strange thing happened unto you." And Christ said,"If they do these things in a green tree, what will they do unto a dry?" Please remember that we should EXPECT trouble...otherwise, you will think something weird is happening to you!