After carefully reading and studying the Bible, I've become convinced that God only cares about this life in that we work for him. There may be relationship and whatnot, but what really matters is that we work for him. Everything else is irrelevant, including what we may want and desire. And even then, the next life is not about our joy, our only reward is him, so who's to say we'll be joyful at all?
John 10:7-10 -
"I tell you the truth, I am the gate for the sheep. All who came before me were thieves and robbers. But the true sheep did not listen to them. Yes, I am the gate. Those who come in through me will be saved.They will come and go freely and will find good pastures. The thief’s purpose is to steal and kill and destroy. My purpose is to give them a rich and satisfying life."
Don't let the world steal from you. Our very best friend is bigger, much bigger than all of it, even bigger than all of the seeming futility. It is the enemy who wants you to feel like life is futile.
Seek him in earnest. Cast your cares on Dad, he cares for you. His yoke is easy and his burden is light.
He's your friend and he sticks closer than a brother. He'll never leave you nor forsake you. Spend time with him, with the one who should be your absolute best friend, the Most High - he's all around you wherever you go. He's your buddy!
That relationship is the key to a fulfilling life. He came to set the captives free, not to enslave you. That depression stuff is bondage.
May he heal your spirit and renew you.