When looking at your job, or someone elses job two of the main things you should look into is what causes them tension and what gives them energy.
If you can help alleviate the things that cause them tension and increase the things that give them energy, you make them happier and in most cases more effective people.
Tension from one thing can cause problems in many other things. We can avoid tension but we can try to alleviate as much as possible.
Likewise, things that energize us also carry over to many other things. We should gravitate toward those energizing things as much as possible.
Have a great day!