Fear is a repellant force. It increases separation within you (fragment yourself) and in your relationships and your manifestations. 

love is a unifying force. It will unify you within, making you whole and complete and also unify you with the people, manifestations and circumstances that are in the love and abundance frequency. 

fear is the opposite of love

this 3D dimension is based on duality. In the higher dimensions we are ONE, but in order to experience and operate in the third dimension duality was created.