When you love and trust God, your life can never “go up in smoke”. Yes, you may have bad times, even miserable times, I have had my share recently, but you are never alone. Also, even if you are without God, you’re still going to have bad and miserable times because that’s how life is. We all have them. Would you rather go through those times alone, or would you prefer to have Jesus with you?
I realize this may not make much sense if you’re not deeply into a relationship with God at this point. But the more you pray sincerely and build that relationship, the more it makes sense.
Praying a 54-day Rosary novena is not just about “gimme this favor”, it’s about building up the habit of praying the Rosary every day. Over time that can become as important as, if not more important than, getting the favor.