Hi all, i've seen a number of threads, asking how to study and how shud one work towards PhD etc and the general response has been to 'work hard'. now, can anyone elaborate on this 'hard work'? i'll be soon beginning my research on quantum transport in solid state physics and more from an engineering perspective. could someone throw light or share any links on the 'hard work' i shud do? or on the other hand, for those who are pursuing research, what does 'hard work' mean to you guys? how to quantify hard work and how to know whether i'm working hard? because, it's easy for one to think that he/she's working hard but in fact it might not be hard work on what matters or what's important.. another question, i've been trying to familiarise myself with the literature by reading technical papers and it's easy to lose track of the objective and also waste time coz, each paper refers a number of other papers for certain results and those papers do the same themselves for other results. is there a way to tackle this issue efficiently or reading all the references is inevitable?