Hi Jam,
You are making the same mistake many of us make when we attempt to more fully understand God, heaven, and eternity -- we always try to think in human terms. In the same way, one might ask, "How long is eternity?"
When asked that question, most of us would try to imagine a billion years, a quadrilllion years, a billion quadrillion years -- and even those numbers stretch our imagination far beyond our ability to perceive. Yet, even if we could possibly imagine those numbers -- that would only be a blink of the eye compared to eternity.
The same is true of heaven. The human mind cannot grasp the dimensions of heaven. Personally, I will just be happy being in heaven with God for eternity. That will truly be heavenly.
This is why Christian believers should be taking every opportunity to share the Gospel of salvation with everyone. Can you imagine being able to help even one person spend eternity in heaven with God -- instead of the only other alternative? And, for every single person we point toward Him who is saved -- that joy multiplies. Now, you know the secret of why Christians are so eager to evangelize.
God bless, have a wonderful, blessed day,
Bill