Facing Magento2 ‘Right’ – searching my conscience of Magento1.x

It has one year already passed since Magento2’s stable release, and less than two years are left until Magento1.x maintenance is over.
Magento2 requires higher skills and deep knowledge against developers and merchants.
I’ve been working with Magento since 2007, and made many mistakes and experiences. At this session, I’d like to talk about how to face Magento2 ‘right’ and avoid same mistake as I did.