Musket - to add to what you said...

Heaven is the freedom to think for oneself.
Hell is being told what to think.

Heaven is freely living the way you wish to live.
Hell is being forced to live in some other way.

Heaven is freedom.
Hell is enslavement (to a dogma, a government, a slavemaster, a boss, a bad habit, a drug, a religious order, and any other form of outer control imposed upon oneself against one's own better judgement).

Heaven is peace.
Hell is war.

Heaven is love.
Hell is hatred.

Heaven is inner peace.
Hell is fear and inner torment.

Heaven is a sense of purpose.
Hell is having no idea what to do next.

Heaven is being interested and inspired.
Hell is being bored and frustrated.

Heaven is seeing yourself in others.
Hell is seeing every other person as just an opportunity or a threat.