I am a forensic scientist who has been investing for 25 years. I have experienced some great results and some bad results along the way. I have been able to take away some good lessons from my experiences. I have learned that great product ideas (Macrovision) do not always translate into successful companies. I have learned that governments can kill stock values (Canadian Royalty Trusts) for no particularly good reason. I have learned that start-ups will usually be back to the market for more money diluting shareholders value. As a result, I have two pieces of advice: Use trailing stops and never fall "in-love" with a company. I am now an investor who tries to identify high quality companies with good growth or earnings potential. By applying technical analysis to these companies I try to find good entry points while also identifying potential break down levels. Although I believe that good quality will eventually go higher, I am realistic enough to know that good stocks can fall substantially along the way and that they can get way ahead of there true valuation. This will create trade opportunities as well as new entry points for long term holdings.