When you feel no lightness in your step, there is heaviness in your heart.  Ask yourself why.  You may say, “But I have nothing to be unhappy about!” Or the reason may be quite obvious.  Whatever the case, ask to be shown where you are blocked.  You will likely feel a heaviness in one of your energy centers.  Massage it with your mind.  Flood it with cleansing light.  Continue this process until this area does feel better.  Once clear, ask for forgiveness and forgive yourself along with all involved.  You are human and spirit, and humans often stumble.  Heavy steps make it difficult to walk without stumbling.  As you fill your vessel with love and light, lighter will be your way.