Recently I have been curious about something. I often hear some traders mention that " I trade the last two hours of the ES " , " I traded this morning and went out of office from lunch" . My trading style requires me to stay near the computer during the whole trading session. So I am a bit curious that are there such ways that allow you to successfully trade just a part of the whole session. And what's more, you don't have to trade the same period within the session day after day, say today I have time from 10-12am, so I trade this period, tomorrow I have time from 2-4pm, so I trade 2-4pm, And agin ,next week I have all the time available, okay then I will trade the whole sessions the whole week, etc. My question is :can you have this kind of freedom in trading ?