While some people do buy winning tickets or a common stock that quadruples or more in a year, it is extremely unlikely, since relying upon luck is an investment strategy that only the foolish or most desperate would choose to follow. In our quest for success, we often overlook the most powerful tools available to us: time and the magic of compounding interest. Investing regularly, avoiding unnecessary financial risk, and letting your money work for you over a period of years and decades is a certain way to amass significant assets.
There are plenty of interesting and simple online tools which can be used to improve your trading results, such as the Relative Strength Index (RSI). This is just one example from among dozens of possible technical analysis (TA) options, and you will need to discover and decide which ones work best for you. You may need to paper trade to figure out the best TA tools for you and your strategy. Besides these sorts of technical analysis indicators, there are a few "tried and true" rules:

Why I’m buying: Spell out what you find attractive about the company and the opportunity you see for the future. What are your expectations? What metrics matter most and what milestones will you use to judge the company’s progress? Catalog the potential pitfalls and mark which ones would be game-changers and which would be signs of a temporary setback.