Yes, the right frame of mind definitely helps. I love that you spend fifteen minutes each night unwinding - that most make sleep so much easier!
Meditation isn't only useful at night - sometimes I use it during the day too if things get a bit much. It's a good way to just get some time for myself :D
Daytime I escape into the garden with the dog, he explores giving me time to switch off, fresh air works wonders along with warmth of the sun in small doses....