It's hard to express how mentally and physically unhealthy bad entrepreneurial habits can be, particularly if done over long periods of time.

Let's take a look at five easy opportunities to invest time in your health and your sanity, which will no doubt have a tremendous affect on your business.

1. Meditation

Meditation can be something as simple as sitting in a chair for five minutes with headphones on and listening to your favorite relaxing music, with the intent to slow down your brain. Just start simple with an app like Headspace -- It's like hitting the "restart" button, allowing you to be considerably more focused.

2. Sleep

This is an example of a time investment that should really be non-negotiable -- you absolutely must get sufficient sleep to be as efficient, focused and productive as possible. Matt Walker is an incredible resource for all things sleep.

3. Exercise

You cannot focus on your mental health, which is paramount to your success, until you've gained control of your physical health. You don't need to train like you're going to hike Mount Everest, but you do need to get your blood flowing and heart pumping for at least 15 minutes every day. Yes, every day.

4. A speed-reading class

Although this time investment also comes with a financial investment, it's pretty small given the potential for a substantial return. For around $150 to $200 and six hours, you can take an in-person speed reading and memory class with a company such as Iris Reading. Don't live in an area that offers live courses? No need to fret, online courses are available too.

5. Mentorship and Advice

One of the best ways to shortcut your decision-making "trial and error" is by investing in advisory or working with a mentor. Generally speaking, a mentor works with you out of the goodness in their hearts, because they’re (usually) older and at a place where giving back without reward is representative of their particular stage in life.

On the flipside, an advisor often has more recent term expertise that can be directly applied to your individual challenge or dilemma, and represent an opportunity to pay for access to years (or decades) of experience that will lead to better outcomes and faster decisions.

The above is from one of the many articles I wrote at Entrepreneur.com. I've summarized the (much longer) article here and updated as needed for relevance.

You can find the full article here at Entrepreneur.com.