We suffer more in imagination than in reality.

Calidius. CC BY-SA 3.0 · Wikimedia Commons
Seneca
Roman Stoic philosopher, adviser to Emperor Nero, and author of Letters to Lucilius. Forced to commit suicide after the Pisonian conspiracy; lived c. 4 BCE–65 CE.
13 quotes
It is not the man who has too little, but the man who craves more, that is poor.
It is not that we have a short time to live, but that we waste a lot of it.
True happiness is to enjoy the present, without anxious dependence upon the future.
While we wait for life, life passes.
He suffers more than necessary, who suffers before it is necessary.
Difficulties strengthen the mind, as labor does the body.
Sometimes even to live is an act of courage.
If you really want to escape the things that harass you, what you're needing is not to be in a different place but to be a different person.
Associate with people who are likely to improve you.
Life is long if you know how to use it.
As is a tale, so is life: not how long it is, but how good it is, is what matters.
Begin at once to live, and count each separate day as a separate life.