Short story ?
"Keep a Limiter on your Master" and
"Keep your channel faders low and the Master at 0db!".
The example DAW is Ableton Live but it really doesn't matter.
Almost weekly I am asked for mixing advice. Usually after a few probing questions I discover that 90% of the people unhappy with their sound are making the same mistake. They are completely overdriving their internal summing bus! Take all your song’s individual channel faders and bring them at least -12db and keep the Master fader at 0dB at all times.
I must admit that quite often I overload my master bus pretty heavily and the final effect is pretty muddy. Lowering channel faders can help to make your tune breath. I actually like one tip I heard somewhere (probably some forum about electronic dance music): "Every tune sounds 'good' when played very loud. But the real challenge is to make a tune that will sound great at low volumes". Well, it was something like that ;)
Keep your channel faders low ...
Keep a limiter on your Master ...