Humility may be the ultimate spiritual "tool" - or just another name for spirituality. Focusing on God rather than myself and my little problems takes me to a more spiritual condition almost instantly. Often called "poverty" or "spiritual emptiness" humility has been recognized as an essential ingredient in spiritual development. You have to be willing to let go of the old ways to embrace new ones.
See the Wikipedia article on Humility.
Benefits of Humility
Freedom from worry.
Feeling closer to God.
Feeling that everything is alright with the world.
Knowledge of God's will for me.
Ability to accept help.
Ability to help others without thought of return.
How to Get Humility
A loop is formed when Gratitude leads to Humility, Humility leads to Spirituality and Spirituality leads to Humility. You can enter this loop at any point, but some are easier than others. Making a gratitude list - a simple list of things that I am really grateful for - helps me to see how limited my role was in getting or making those things.