Abortion-Killing: The Silent Genocide: 2 Billion Deaths Victims Worldwide.

[Bucky Ball]

Dear Christian, let us reflect upon this for a moment… St. Thomas tells us that the lowest degree of Sanctifying Grace is worth more than all the riches of the world. Think, then, of all the riches of this world! The mines of gold, of precious stones, the forests of costly wood, and all the hidden stores of wealth, for the least of which treasures the children of this world are willing to toil and struggle and sin for a whole lifetime. Again, consider that the lowest grace which a humble Catholic Christian receives at the rails of the sanctuary at dawn of day, before the great world is astir, outweighs all those riches.
But why do I draw my comparison from the things of this world?
St. Teresa, after her death, appeared to one of her sisters in religion and told her that all the Saints in Heaven, without exception, would be willing to come back to this world and to remain here till the End of Time, suffering all the miseries to which our mortal state is subject, only to gain one more degree of Sanctifying Grace and the eternal glory corresponding to it.

That's total bullshit. They (people in heaven) are according to the church, perfectly happy in god's presence. 
Whatever level that are at, they are perfectly happy. You know nothing about Roman theology.
There is no dogma, that, anyone could be aware they could have done better. That's not perfect happiness, it's REGRET. 
Just more made up shit from this idiot heretic who can't think through how to get out of a paper bag. 

"Are there different degrees of happiness in heaven?" 
There aren't various degrees of bliss in heaven because when you go to heaven, you are in the presence of God – which is pure joy, and happiness, and contentment.