Wishy-washy or passionate? Which one describes your writing life? I've heard more than one person expound on wanting to be a writer. They talk about it and take a half-hearted stab at it, then give up when they don't see immediate results.
A star athlete became a star because passion for his sport burned within. The basketball player who doesn't have that intensity is the guy who spends the game on the bench. The writer who doesn't harbor those intense feelings is one who will not have a long list of publications behind his/her name.
How do you get that passion? Can't buy it. Can't steal it from anyone else. Can't wish it into fruition. You have to love something a great deal to spark that depth of feeling. You have to want more than the glory of being a successful writer. You need to write for the love of writing. Those who love beautiful prose when they read are ones who will try to equal it in their own writing.
I held my desire to write in check for many years. I waited until my children were independent adults, and as I've said many times here, that probably was not the smart thing to do. I wish I had followed my desire earlier, but that's water over the damn now. Still, the embers glowed within me all those years and when I finally got started writing the stories and essays I'd often thought about, it burst into a flame that still burns within me nearly twenty years later.
Does having a passion for writing insure you'll be a successful writer? No, it doesn't. What it does promise is that you'll continue writing and most likely will continue to be a better writer. If the passion is alive and well, the writer will take all the other steps to grow in his/her chosen field.
If you don't have that passion now, does it mean you should quit? I don't think so. Maybe if you keep working at it, the spark will ignite when you least expect it. Give it some more time.