To reach the pinnacle of your own success, you must have laser focus on your purpose. When you fulfill your purpose, you'll find feelings of contentment, peace, and joy like never before. When you over-commit and scatter yourself in a thousand different directions, you're less likely to stay on the path to success, but will find yourself wandering further and further from your north star. Being mindful of purpose, maintaining focus on your specific goals, and knowing when to make sacrifices are key to your personal success and fulfillment.
A toxic work environment is one that doesn't support your boundaries and parameters, and certainly doesn't support a healthy work/life balance. Often times, the environment requires that you be available at odd hours, on weekends and holidays, and during your time with your family when you should be refreshing for the next week