Remember the good old saying, "Never Put All Your Eggs In One Basket", what this saying implies is that in the event the basket tips over, the chances of all your eggs breaking is very high, however, if you place all your eggs in different baskets, if one tips over, you still have other baskets intact. A lot of individuals were devastated by the events of the 2008 Global economic melt down because, the only source of income they depended upon was their 9:00AM to 5:00PM day job. Thus when most companies began to lay-off and downsize their workforce, a lot of honest hard working folks ended up losing their only source of income.
Things were so bad, some folks ended up commiting suicide, they just couldn't live on knowing their only source of income has been taking away from them. However, looking at the world we currently live in, it will be suicidal to put all your hope in one stream of income, you'll need to have multiple streams of income.
Keep Striving, Keep Believing, Never Give-Up, Winners Don't Quit and Quitters Don't Win.