being spiritual is about knowing in your heart and mind as truth things for which you will gladly sacrifice ...
ideology passed into ones actions...and discipline i believe is important in all faith...whether one is agnostic or nihilistic..articulation about ones beliefs is what makes one spiritual as it applies to your life day to day...

I suggest being open to change...and nature as a whole can pacify the being..depending on where you live try to spend some time outdoors..

if you enjoy it...talking about life and values with close friends can tighten spirituality..

take these with a grain of salt these are things i personally believe..

meditation can be found in many activities as it is introspection/concentration and discipline rolled into one-a peace focus...i find playing lacrosse to be like a form of meditation..

gl