I’ll try to comment and translate some in Slovene, i just woke up so my mind is not fully functional yet

Worry does not empty tomorrow of its sorrow. It empties today of its strength.
Don’t think much about tomorrow, take care of today, you never know what will happen next.. it can end that you worried for nothing and felt bad the whole day for something that is even not gonna happen.

Happiness isn’t having what you want, it’s wanting what you have.
If you are always searching for new things and never happy with things you have, you can’t appreciate anything, not even your life.. be happy with what you have, maybe tomorrow you’ll lose everything and won’t have anything at all!

Examine what is said, not who speaks.
Don’t let you prejudgments reign in your world, sometimes even a stupid person can say something smart.. really

Any time things appear to be going better, you have overlooked something.
Ok this is not always true.. but in most cases it is, indeed.

Bravery is being the only one who knows you’re afraid.
Others can’t say this just by looking at you, you have to shake or something.. So be strong or your strength will become sad and slowly turn into fear!