Troubles with sleeping at night

Ren brought this up. A potential cause for my sleep issues is overexposure to blue/ultraviolet light. Specifically, electronic device screens are probably messing up my circadian rhythm. Things I could do to improve this condition:

• more exposure to sunlight during the day
• stop using technology closer to bed time. Would need to come up with a way to do something at nights. Handwritten todolists + reading books?

Interesting side note: Most of the sun's energy is infrared, but it still contains some ultraviolet and of course visible light. (Integrate the solar radiation spectrum below for each region)

Source:

http://www.health.harvard.edu/newsletters/Harvard_Health_Letter/2012/May/blue-light-has-a-dark-side

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgywXlr-lOVrRyn6ztk-eDxlJMX7JG1kI1F5YAP4p4yaxuLQkzowjjpifes-hQtfmkh-l1fvug41tsMRCV_d_joetefH1659rP8XvbDxqKOIlqM_ARAshv4-A6GN0Hw1qAxNfI8yc8IAGYo/s1600/Solar_Spectrum.png