"For me to live is Christ and to die is gain.If I am to go on living in the body, this will mean fruitful labour for me.Yet what shall I choose?I do not know!I am torn between the two:I desire to depart and be with Christ, which is better by far, but it is more neccessary for you that I remain in the body.Convinced of this, I know that I will remain, and I will continue with all of you for your joy and progress in the faith." (Phillipians 1:21 - 25)
"as sorrowful, yet always rejoicing, as poor yet making many rich,as having nothing yet possessing all things."(2 Corinthians 6:10)
Life has it's ups and downs......it's best not to be simplistic about what life is and isn't - and not to minimise the very real pain that others may be experiencing.
Having said that , we can rejoice that our names are written in heaven, while contending for the faith and fighting the good fight.
My advice to anyone whose life is going smoothly is - store up for the storms ahead - for they shall surely come!And when they do - you want to be sure that you have the inner recources to rely on to make it through the trial still standing.
You prepare for trials by clothing yourself in Gods armour (which is the Word of God) - and you do it BEFORE you are in the thick of things!
The devil has a way of throwing a spanner in the works when we get smug about how well our lives are going....so watch out - but trust that your Father has you in His hand.