There are many good reasons why doubling your money is a good idea, but by far, the best reason is that if you can sustain such a feat, you can make a large fortune very fast and compounding is the key and the answer to rapid wealth accumulation.
One example is starting with just $300; you could literally have over $1 million dollars in 14 events or compoundings. If you took out a calculator now to prove it to yourself you will see how quickly $300 dollars turns into a million dollars if you double the result every time.
The question and the whole point is however, how long will it take you to double your money the first time and how will you do it. Furthermore, the question is whether the process you came up with is scalable. It is relatively easy to double $300 dollars quickly but how will you double $500,000 dollars.
The answers to these questions are detailed and convoluted but not difficult. Look at it this way, if you can add just 20% to your $300 dollars in one week, you can double it after four weeks. So if you can sustain that for 13 months you could indeed have your first million in just over a year.
We are talking theory and this by far, would not be as simple as it sounds, but in actual fact it is specifiably possible. The math shows it. Putting together the circumstances that would create this situation would not be hard in the beginning. Lets consider a quick model.
Buy a $700 dollar mountain bike you found cheap selling for $300, sell it by the end of the week for $600
$600 buys a very very cheap little car. You clean the hub caps and vacuum the interior. You get $1250 for it in a week and a half.
Your $1200 buys you another car worth $3000 you pick it up cheap and give it some attention and sell it for $2800 in under 2 weeks.
Your $2800 makes a great down payment for a lot of land. A corner block that you have subdivided. You paid $30,000 now the two lots are worth $25,000 each. After sale you have $50,000 minus a loan of $27,000 leaves you with $23,000
Repeat the above block subdivision a few times, until you get to $100,000 then possibly begin building on the lots. In a few more translations, you will be done.