I also was wondering about this when I first got going as there are many ways to go about this. What I found was I needed to turn up my actual monitors/headphones. This meant I was turning tracks down instead of up thus leading to headroom and not overloading the masterbus. I try to have about -10dB on my levels after drums and -3/4 at the and of the mix. I also use normalize audio and then sometimes reduce the clip gain so my faders start close to unity. I use Studio One but methods are universal, if your after more tips in Logic try the Daw's forum for logic Pro I found the Studio one very helpful and friendly.
Hope this helps