Step 1: Don't sleep. Sleeping is for the weak.
Step 2: Lots of energy drinks. Any energy drink will do. My personal favourite is redball.
Step 3: Never speak to your family again.
Step 4: Don't get a girlfriend. Woman are annoying as ♥♥♥♥ and when your playing r6 you don't want to be distracted by them creatures.
Step 5 (Finale step): Destroy your mental health. As your gonna be playing ranked it seems that your mental health will start to deteriorate.

If you follow these steps you will become plat or higher in no time!