Overtrading is a huge problem for the majority of traders and is something I myself can be prone to' especially with Internet trading systems. It has been shown that traders, who progress from telephone trading to using the Internet, on average, increase the number of trades by 25%.
No trader, apart from market makers, can justify trading every day. To trade the correct number of times we need to stick to using our trading plan and the rules that we set ourselves. We also have to focus on our costs to trade and I don't just mean commissions. We have to also account for spreads and funding costs. Always remember that trading is a business and needs to be treated as such.