very simple, the choice is yours...
We are living in a planet called earth, if everyone choose to sin earth will be hell, if not it will be heaven.

Yes we can (choose to) sin in Heaven... but by doing so it will become Hell.

Yes. Satan and his angels did and will be going to the eternal lake of fire. We on earth didn't chose this path,. Adam did. we have a choice and that choice will make the eternal difference. The book of revelations says there will be a new heavan and earth and we will be given new bodies. The curse of sin will be gone. But since Satan and his angels chose to disobey, I think you can still mess up. Unless the curse of sin being lifted means we will not sin anymore. The question really is "what are you doing about it now to get into heaven. If you don't make the choice to follow jesus you won't be there in the first place. If you make that choice now, I believe you won't have that problem in heaven.

Impossible.

who tells you that you are going to heaven? if so, is Satan there with u to make u sin again?

v do sin for money or for women! both of the things gonna b available for each one more than he needs!

no.we can't to be sinner in heaven.we are to be spirits in heaven, no body.

"who tells you that you are going to heaven?"

You do! You decide to make the decision to ask God into your heart, to live your life for him, to allow him to live through you, and to write your name in the book of life. And the rest... is faith. I have learn through experience that the stronger my faith is, the more miraculous things become. But when my faith falters, my relationship with God also falters. The choice is yours!