Prologue

Systemd is a nice tool to start, stop and restart scripts on your linu machine. If your script crashes or the VPS does a system reboot your scripts will come back online.
In order to use this you need to be on Linux, have systemd, the discord-twitter-bot has been properly installed and it has worked before.

Setup

Copy the dtb.service file and put it to /etc/systemd/system
cp dtb.service /etc/systemd/system/dtb.service

Edit dtb.service
nano /etc/systemd/system/dtb.service

Adjust the WorkingDirectory to the path you git cloned the discord-twitter-bot folder/repository.

Adjust the path of your python executable (first parameter of ExecStart):

tin@Riftshadow:~# which python3
/usr/bin/python3
tin@Riftshadow:~# which python3.5
/usr/bin/python3.5

Adjust the path to main.py (second parameter of ExecStart)
<...>/discord-twitter-bot/bot/main.py

systemd commands

sudo systemctl start dtb.service
sudo systemctl enable dtb.service
sudo systemctl disable dtb.service
sudo systemctl stop dtb.service
sudo systemctl restart dtb.service

enable means that the service is automatically started when your VPS boots up.