What the.....

I'm tired talking about it. I'm even tired listening myself talking about it. Whether it will work out, why it wouldn't work out, and why it shouldn't even work out. On some days, I ask myself questions with no answers. On some days, I tell myself to just go ahead with it. But wait a minute, relationships should not be "Heck! Juz give it a shot lah.." right? What does it take to walk away from it all then? What does it take?