Buy that which is showing strenth - sell that is showing weakness. The Public continues to buy when prices have fallen.

The professional buys because prices have rallied. This difference may not sound logical, but buying strength works.

The rule of survival is not to "buy low, sell high", but to "buy higher and sell higher".
Furthermore, when comparing varius stocks within a group, buy only the strongest and sell the weakest.

When putting a trade, enter it as if it has the potential to be the biggest trade of the year.

Don't enter a trade until it has been well thought out, a campaign has been devised for adding to the trade, and contingency plans set for exiting the trade.

Be patient. If a trade is missed, wait for a correction to occur before putting the trade on.

Be patient. Once a trade is put on, allow it time to develop and give it time to create the profits you expected.

Be patient. The old adage that "you never go broke taking a profit" is maybe the most worthless piece of advice ever given.
Taking small profits is the surest way to ultimate loss i can think of, for small profits are never allowed to develop into enormous profits.

The real money in trading is made from to one, two or three large trades that develop each year. You must develop the ability to patiently stay with winning trades to allow them to develop into that sort of trade.

Be patient. Once a trade is put on, give it time to work; give it time to insulate itself from random noise; give it time for others to see the merit of what you saw earlier than they.

Be impatient. As always, small loses and quick losses are the best losses. It is not the loss of money that is important. Rather, it is the mental capital that is used up when you sit with a losing trade that is important.