Time management and organization for PhD Student in first year? After failing the first year of the PhD program at a top university, I know that my poor performance resulted from dealing with a tremendously debilitating psychological condition, but it all was exacerbated by a serious lack of time management skills and poor organization. This academic year, I constantly underestimated the time it would takes me to complete every assignment. Consequently, I found myself asking for extensions and even then, I was incapable of making the extension. I can't use the excuse that I simply am unfamiliar with the subject matter, as I have earned a master degree in this field with honors from another prestigious university and worked for several years prior to starting the program. I also can't blame my failure on procrastination, as I  generally start weekly assignments  3-5 days prior to the deadline, and  work on term projects for at least a month prior to their deadline.  To say the least, my professors are irritated with me. Their frustration in part comes from their knowledge of my abilities. Every single one has set me aside and provided candid feedback and in their words...once I manage to complete an assignment and submit it on time, "the content and quality is pretty good". Now that my health has improved, their feedback confirms my self-assessment and I am 1,000% certain that my failure to thrive is due to serious time management and organization shortcomings.  

For those of you out there that have encountered a similar situation and been able to overcome it, what did you do? What strategies did you use for completing assignments on time (specifically writing assignments or a critical and technical nature)? Can you recommend any resources that have helped you tackle these problems?
In my time as a PhD student over the past few years,  I have really benefited from the simple old-fashioned technique of just making lists on a small notepad.  Whether in lab or at home,  if I feel disorganized or anxious, I just write down the things I know I need to do. As well, I can check the list of things I have already written down earlier in the day. Putting things on paper by hand is really a simple and effective way to get things "out" so to speak. Has worked great for me in my first 3 years of my PhD.  If I am on the go and can't write something down Siri (on my IPhone) is awesome for reminders. Don't stress too much either. Work hard, stay organized, but make sure you still have time for sleep, hobbies, friends, and family. Otherwise you will drive yourself crazy. I ensure this for myself by not working on Saturday's or Sunday's. Believe me, in the long-term, a rested and clear-minded scientist working Monday-Friday will outcompete a mentally exhausted scientist working 7 days a week. I learned these things while an undergraduate student from one of my favorite professors. Not only was he an awesome teacher, scientist, and Department Chair, he was a Army Colonel working in military intelligence several weeks out out the year. I figured this guy must know a thing or two about life. I put it into practice and come to find, he was right! 

Best of luck to you!