Regret arises when past choices were wrong.
If you think too much about the past, your regrets will only grow.
Most people are consumed by the heartache of dashed hopes and worries about a future that has not yet arrived, and they let this moment pass them by in vain.
But it is wise to just let go of what has already passed.
There's no need to worry about something that hasn't even happened yet.
If you lose sight of the present because you are caught up in regret and anxiety, you will end up in a vicious cycle of creating more regrets.
Schopenhauer says that no matter how painful it may be, we should let go of what has already happened and calm our upset feelings, and that we should remember the words of Homer (The Iliad) that we should not worry about the future because it is up to the will of God.
--- From "The False Excuse of Pessimism"

If the Dionysian refers to the unity with the 'primordial One' that is the basis of this world, the 'principle of individuation', a term used by Nietzsche, is a concept that appears in Schopenhauer's 'The World as Will and Representation'.
The condition for the will, which is the essence of the world, to be diversified through objects is the principle of individualization, which is time and space.
Therefore, although humans perceive and understand individually according to the conditions of time and space, in reality, only one world exists.
To feel this, you need an artistic experience.
If you've had a tough day, and often feel doubtful about life, what choice would you make?
How about taking a break from life with a glass of wine and some music, as Nietzsche suggested?
--- From "Beyond Pessimism"

Nietzsche said, “Solitude makes us stronger, but it also makes us softer towards others.
“Solitude makes us grow in two ways,” he says.
So, Nietzsche needs ‘solitude.’
Solitude is a return to oneself, a recovery.
The only way he can escape from his vomiting is through free, clear air.
Nietzsche finds a fountain of joy alone in a high realm where all things impure cannot approach, avoiding the smell.
"Here, in the highest place, a fountain of joy gushes forth! And here is life, which refuses to drink from it with any impurity!"

Wisdom is the whisper of a lonely person whispering only to himself, even in a crowded marketplace.
--- From "Is Unhappiness Due to Loneliness?"

In this respect, suicide is foolish.
People with severe depression often believe that the physical pain of suicide will not be that great because their mental pain is so great.
So, there are many cases where decisions are made in a hurry.
But no one knows what suicide is like.
Because the dead cannot speak.
Suicide can be seen as an experiment and a question that humans ask of nature and try to force an answer.
In other words, it is an experiment to find out what changes human survival and perception undergo through death.
But it's a clumsy experiment.
Because this experiment destroys even the identity of consciousness that must ask questions and receive answers.
--- From "Depression may be a good stimulus"

What's more important than the vanity of trying to look good to others is myself.
The principle of 'chivalrous honor' is very foolish in that it seeks to gain external respect and attention even by using physical violence.
The saying, "Honor is more important than life," is a kind of madness that forces us to believe that the opinions of others are more important than our own survival.
The same goes for the expression, 'Fame is essential for success.'
Ultimately, it is nothing more than an exaggeration to say that they want the benefits that honor brings, namely material wealth, rather than the honor itself.
The high status that is sought through career advancement is, strictly speaking, a fictitious value.
Honor, fame, and status based on the reputation of others are delusions and madness that make us unhappy.

--- From "Is the way I appear to others the truth?"