I have been having palpitations in my heart for the past couple of weeks. My mind feels fatigued or lazy and excessively alert at the same time. I cannot relax even if I want to. On top of all of this I've been working 6 days a week for 12-14 hours each day. I can't even sleep properly at night. Nothing specific has happened to trigger this response, I'm just extremely clueless about where my life is going.