Learn your dreamsigns, get into the habit of doing regular RCs, and you'll hopefully have some natural DILDs.

Or, try the WBTB/WILD combo.

Seriously, try everything. Since you're not in bed yet, I'd say when you go to bed tonight, think/hope for/expect a DILD. Set your alarm for 3:30am or something, and even if you don't have a DILD, you can try a WBTB/WILD. Only you will know what works, and nobody knows what works best for you until you try it all.