First of all, all this stuff of "do you remember" is how the brain is supposed to work. Our brain stays efficient by forgetting information that is no longer relevant. Who cares what you had for lunch last week? Forgetting that is a feature, not a bug.
As for the rest, the "advice" is fairly random and vaguely insulting ("start to fucking think", "read old books", "understand that things die", "wake up entirely").
My advice would be simpler and more direct.
If you have a problem with internet addiction, treat that directly. There are many sources out there to guide you.
If you have problems with fatigue and depression, see a therapist. There are many potential causes which a trained professional can help identify and work with.
And if your main problem is anxiety, then mindfulness meditation has been shown to help in many cases -- lots of good books on this. There are many other cases where mindfulness is not going to be enough, and therapy will be required.