40-year-old with varied work experience seeks advice on career progression and managing distractions

Hi sir, I am 40 yr old having work-expereince of 10 yrs behind me in ITes, customer support & service, banking and sales & marketing (product). My life till now can easily be converted into a bollywood biopic having its own twist & turns, roadblocks, struggles laughter, joy and sorrow. Change is the only constant in life and that exactly applies in my case. Although it has been a satisfactorily life till now given that I know myself and how I lead my life. Whenever I start to read something new I feel like going deep into it. I am also easily attracted to novel things & concepts. I usually get into procastination mode whenever I come across something entirely new and start to imagine myself trying it out in realilty.Why does this happens? Why can't I focus on one single thing at a time and see it to completion? I know in todays world generalists are looked down upon and it is an era of specialists, experts and professionals having good domain knowledge of their area of work. It is always better to be an expert than be a jack of all trades (which seems very filmy nowadays where a hero is expected to do everything on his own). Lately I have developed an avid interest in technology and i keep on reading various articles & books on IT and technology. I am also pursuing an online cyber security course from Great Learning Institute, Bangalore. I want to know am I going in the correct direction in life or is it something else I should do which ensures more satisfaction in life? Lately, I have become bit irriiated as well due to the above reasons as I tend to do multiple things at a time (multitasking). My parents are also fed up of me now. My mother keeps nagging me all day.I dont know how to really deal with her, as she always finds perfection in everything. That becomes too much at times. Does this happens in every household? Should I go out and travel to some place in order to temporarily escape from all this? Kindly suggest me some course of action. Pls answer. Thanks