Stoicism was the only philosophy that I felt was practicable in he real world today. It reminds you that you have control over your own thoughts and you can choose how to respond to outside events. You can appreciate what you have now by negative visualization and remembering there was a time when you wanted it more than anything. That your hard work is good for your own soul even if no one else appreciates it. That life is fleeting, people will leave you, will die and betray you but not be surprised when it happens.

I am in no way affiliated with this site or mailing list but I can't recommend this site enough, it's the only mail I always open in the morning. It's nice everyday to get a new tale of how someone was stoic in a difficult situation. https://dailystoic.com/