Tactical Trading Outlook

I asked a question about trend following earlier and decided against it, however the strategy ive been using with success is almost random. I literally just pick a stock and look at its chart and use technical analysis like bollinger bands. I look for band trading or breakouts or new highs. Each trade is different depending what i think. I also do a simple fundemental look and look at headlines and upcoming events. I basically take an educated guess from past performance. Most of the time like 6 or 7 out of 10 times im right. Call me lucky lol. When im wrong i simply cut my loses and look for something else. I also trade the same stocks most of the time like my favorite is AUY i trade this stock all the time. I dont hold on to stocks for more than 2 weeks usually unless there is no movements. Im also not a daytrader. I usually buy or sell one day then in a few days or a week ill sell or cover. I also like to trade rallies in the market or crashes only once i recognize whats going on. What is this strategy called? But keep in mind i know money management and i never put more that 20% in a trade and since i have under 10K i can take risk and since im only 19. If a stock dosent do what i think it may do i get out period. What are your thoughts on this strategy? Ive been doing this for almost 5 years now and never had a “bad” year when the market crashed back in 08 i lost about 20% but then shorted the stocks and quickly made it back then i went long and make much more.
i average 70% a year for the past 4 years this year im up about 13% so far.
i read in a trading book that says what ever works for you do it dont do what everyone else is doing if it works use it and thus far the way i trade is working but lately im think will it in the long run?