Your health will improve.
Were you aware that the most common time for a heart attack to occur is on a Monday morning? That is definitely a reason to take notice. There are many stress-related illnesses, both physical and emotional, that can happen if you are doing work you do not enjoy. Your immune system is compromised if you are not happy, and you are more susceptible to all sorts of physical illnesses.
Your relationships will improve.
When you are unhappy in your work life, it will spill over into your relationships with your spouse, your kids, and your friends. When you are doing work that you love, you are no longer cynical, irritable, and impatient. People will want to be around you because of your positive attitude and happy disposition.