First of all, losing $100 trading 16,000 shares is not bad, in fact, I would call that good. Most people lose money. The ones that make it usually follow this cycle: lose money, tread water, become profitable, become REALLY profitable.
The more screen time you get the better. Trade your ass off and manage risk. Give yourself daily loss limits. If you are trading 100 share lots $100-150 a day is about right. When (if) you start making money double your shares and add 30-50% to your loss limit. Rinse and repeat.
If you want even more risk management, if you get up a good amount by mid day, give yourself a 10,20, or 30% rule -- meaning if at highs you are up $1000, and lose $300 (30%) stop trading for the day. This way you can keep adding to your profits but also lock some up if things get bad.
PS. If you really want to cut back trading, only trade first 2 hours and last hour unless a major rally, selloff happens mid day and buy call of duty.