Disclaimer: Feom your question, I assume that you feel you work to much or have to little time for outside activities. If you are happy with your working hours and feel well, all is great. If however, you have the feeling you don't have enough time for life, have to work in order to get better positions in academia, to make your professor happy or because there is so much work to do, keep reading.
My advice is simple: Work fewer hours.
Make yourself a schedule and leave after eight hours. (Of course, I don't mean to "never stay a second longer than eight hours", but "after arouns eight hours, finish your train of thought and then go home".)
There can be exeptions (like a deadline). If they occur only once in a while, that's okay - work longer and take that time the next time off. Or maybe at some point, you think you want to do this a dditional work because the problem is so exciting. Then it's okay to do it (at least for you, probably not for society as a whole). But don't negligate your friednds, family, hobbies, partner, time for yourself,..
Maybe this doesn't work out because your prof doesn't like it or because you don't have enough results then - but do you really want to work in a system where you have to work constantly so much that you are burnt out? (By the comments of your family and friends, there are jobs where this is not the case in your region.) Wouldn't it be good to leave the system when it doesn't turn out?
One more advice: In your free time, find out about industry. What kind of work do your peers with similar qualification? What do they do exactly? Do you have the industry skills you need? Goal of this shouls be to find out you have a safety net - if Academia treats you like a slave, you can just go and do something else. (Many students believe Academia is good and Industry is evil or that they are too bad for Industry or whatever - you should get rid of those thoughts so you can really say you are working in Academia because you like it and leave when you don't like it and not that you are in Academia because Industry is bad.)
My last advice: "There is too much work to do" is not only in Academia, it's in every job and every non-job. The difference is how people react to this - in your case it is"I have to work more", in other jobs it is "well, it's not my problem, I work my hours, if the boss is not happy, he has to hire additional personel". My point is: don't discard your family's and friends's opinions just because they are in Industry. Many academics work in healthy ways - yet you ask in an Academia forun. And if you look in the Internet for advice on working schedules and "I have too much work": don't discard any industry advice because you are in Academia. In amount of work, there is no difference at all between Industry and Academia.