The standard way to do this is to use computerized mechanical trading systems. You arrive home in the evening after work, turn on the computer, and download today's price information from your data vendor. While the data is downloading you eat dinner. After dinner you run the system strategies, check today's filled orders, generate new orders for tomorrow, and do your record keeping for today, if any. Then you shut off the computer and go about the rest of your evening. Depending on the complexity of your strategies and the anal retentiveness of your recordkeeping, it all takes about 15 to 60 minutes per evening.
However I get the impression that you want to read charts and use your own judgment plus discretion plus experience to make trading decisions. By definition this is not a computerized mechanical system so it will probably take more time, per day, to implement.