In my senior year in high school, I landed a part time job as an electronics technician. When I graduated, I worked full time for that company for 10 years as a self-taught electrical engineer. I started working on my college degree (Computer Science). I was able to take advantage of tuition reimbursement offered by the company to pay for college. Student loans were not really needed back then as college costs were reasonable. I bought my first house.
I switched companies in 1989 and worked for almost 26 years as an Electrical Engineer. I finished my Bachelor's Degree in Computer Science at the second company using tuition reimbursement, and my own funds. I really wanted to do a Bachelor's in Electrical Engineering, but there were not any evening classes available for EE at the time. Sold my first house, bought my second house and my vacation home. Paid off my vacation home, refinanced my first home several times.
I think the main things which got me to where I am today are the following:
1. Think of debt as slavery. It should be paid off as quickly as possible. 2. Have as few children as possible. (I have none). 3. Don't spend frivolously. Live way before your means. 4. Try to do as many home and car repairs as you can yourself. 5. Make sure you are adequately insured. In the US, you need medical insurance to cover medical costs and liability insurance to protect from lawsuits. As your assets grow, you need to adjust your liability insurance accordingly. 6. Invest regularly and often.