There is one thing many eventually realize and desire , even if this is not realized for many years is  that  to be so focused and actually be so close to God that we can truly feel His presence.
This is evident in the Bible (Psalms 16:11 NKJV) You will show me the path of life; In Your presence is fullness of joy; At Your right hand are pleasures forevermore. Therefore once we experience  God's presence we can experience an  awesome pleasure beyond what  a person is capable of experiencing.in any other relationship or experience. Saints have discussed experiences of joy that filled them with rapture to overflowing.  The Bible indicates that nothing on Earth can compare to the joy and pleasure of being in God's presence and especially once you get a taste God nothing else can ever satisfy you to this extent . (Psalms 34:8 NLT) Taste and see that the LORD is good. Oh, the joys of those who trust in him!

Then we can  define that actually heaven is to be with or in the presence of  God and conversely the definition of hell can then  be the state of being separated from God and especially when a person acts in ways that are contrary to the 10 commandments and against the love of neighbour. (Proverbs 8:13 NKJV) The fear of the LORD is to hate evil; Pride and arrogance and the evil way And the perverse mouth I hate.

(Proverbs 14:27 NLT) Fear of the LORD is a life-giving fountain; it offers escape from the snares of death. The fear of the Lord then leads us always to then abhor evil and sin because these acts separate us from God and then are prayers are left unheard. (Isaiah 59:1-2 NIV) Surely the arm of the LORD is not too short to save, nor his ear too dull to hear. {2} But your iniquities have separated you from your God; your sins have hidden his face from you, so that he will not hear.