All you need is the 460 nanometer wavelength of light. That&#x27;s what your eye&#x27;s daylight detectors are most sensitive to. Halogen lights don&#x27;t have that frequency, which is why they didn&#x27;t work for you.<p>Furthermore, you don&#x27;t need this light all day. Just in the morning and evening.<p>You can get 460 nanometer LED lights from grow shops online for around $50, and put it close to your face for 15 minutes in the morning and evening. It&#x27;ll reset your rhythm, cure your sad, and that&#x27;s all you need.