I've said it once, and I'll say it again, "Your 30s are the most financially challenging decade of your life." Therefore, if you can keep it together in these years, you'll stand a decent shot of winning in the end.

What can you do in your 30s to set yourself up for retirement success? You can become an income investor.

Income investors seek current income—a paycheck from the stock market. This paycheck grows along with your responsibilities to assist you on your journey.

The other parts of your stock market portfolio include speculation, growth, and dividend growth. Together, you will have everything necessary to build an excellent tomorrow while living a wonderful today.