Often in life, we think God will work good in our lives no matter what. If you look at the life of Jeremiah, you can see that that's really not the case. Yes, we have hope in Jesus after this life, but that doesn't mean life is going to be good. We will experience hardship and difficulty and we may even have horrible and senseless things happen to us. We can be tempted to think that God will eventually give us something good, but that's not his promise. God's promise is this, that he has saved us in Jesus, and that he will return soon to fulfill his plans for you, me, and everyone. We can rejoice in the truth that God will work his ultimate good (and so ours), even if we have a life full of suffering and pain. Our current or future situation, good or bad, does not reflect God's love for us, we see that in Jesus, who will fulfill his ultimate purpose for all things when he returns.