Hi Everyone out of curiosity and this question is open for...

Hi Everyone
out of curiosity and this question is open for discussion with everyone just to get some ideas from each one who like to share their ways in trading, if i need to put this question in a discussion page by itself please guide through
I been in the share/forex market for a year used to do day trading (i stopped forex as my losses were terrible) now i am in BOT for long term,
as there are near 3000 stock in ASX how investor/broker find a stock that has potential to grow medium to long term (no matter how much the stock cost)?
what catches the eyes investor most in a trade?
how do they make decision on when to buy and sell?
I have done lot of research about indicators but i am lost on what to use as they might work in some cases and might fail in others so am I missing anything?
what are the best time frame do you think traders should use?
thank you for sharing your opinion in advance