My daily life is seriously impacted by my daily investment activities in the US stock market. I got up in early mornings, like 1 or 2am, then slept again around 6am, for less than 1 hr. I only sleep like 4-5 hours per day. My mindset has not been in a research mode for a long time - I do not have the curiosity to read literatures, and the urge to complete unfinished manuscripts. Fluctuations in the market, hence the loss and gain of my account, disturb/disrupt my mood. I am afraid I am in a state of depression. How's to control one's mood then, while being in the heat of investment? first and foremost, reduce my investment moves to absolute minimal - use the simplest method, and do not use complex investment 'strategies' that consume my brain; care less about the market ups-and-downs, as t