Waves on a body of water can represent power, energy, nature or the forces of nature. They can also represent rhythm and cycles. They can represent being carried along in life, making things easy, or if they're working against you they can represent challenges, obstacles, overwhelm, chaos, or turbulence.
A wave can represent progress or movement forward.
Regular waves, one right after another, could represent consistency, reliability, or predictibility.
One huge wave could represent overwhelm or a challenge in your life. Turbulent waves might represent chaos or loss of control due to external forces in your life.