It is interesting how you have framed that question. "Most of the people"? "the present time"? Firstly "most" I'm sure you realise is rather sweeping and can't be supported especially if the time frame you give it is limited to this instant.
However, research I carried out some years back led me to the realisation that 'feeling tired all the time' was the subject of the most frequently recurring request for help in letters pages found in popular psychology magazines dating back to the mid 1920s. This is "popular psychology" which is very different from academic Psychology in its fundemental understanding of the function and purpose of human behaviour. These popular psychology magazines invariably advised the tired authors of letters to find a hobby and they are still giving advise along those lines in twenty first century popular psychology magazines.
You mention tiredness, exhaustion and also distractedness. I wonder whether the people in question might be well advised to visit their GP. Having eliminated an organic explanation for the problem either learning meditation or self hypnosis/hypnosis can be very helpful with these types of problem.