Successful Forex Traders

Once you know what to expect from your system, then have the patience to wait for the price to reach the levels that your system indicates for either the point of entry or exit. If your system indicates an entry at a certain level but the market never reaches it, then move on to the next opportunity. There will always be another trade.
Objectivity or "emotional detachment" also depends on the reliability of your system or methodology. If you have a system that provides entry and exit levels that you know have a high reliability factor, then you don’t need to become emotional or allow yourself to be influenced by the opinion of pundits who are watching their levels and not yours. Your system should be reliable enough.
In the end, successful trading is all about risk control. Take losses quickly and often if necessary. Try to get your trade in the correct direction right out of the gate. If it backs off, cut out and try again. Often it is on the second or third attempt that your trade will move immediately in the right direction.