Yes. Emotions are one of the most powerful forces on earth. They can lead to war or peace, or something in between. Probably the biggest help though that everyone needs with emotions, (besides understanding how they color your world) is to be heard and understood. It is usually not helpful to let emotions get too bottled up.
People often misquote the old saying "As you think, so is it". But the quote is: "As you think, in your heart, so is it." Thought combined with emotion helps create the environment we live in.