I started long ago to holding years and eventually just kept adding to smaller timeframes, so it is yearly down to using ticks, and all automation. I have also made 2 HFT systems and blended them into one system, they work on what happens 1-2 seconds before few HFT kicks in as I have identified math aided pattern, I have programmed software that looks for patterns in different kind of way, once you can take abstract and turn it into how you rather see it visually, you can then make it logical.