Raji Kannan is the founder and CEO of LensBricks, a startup that develops smart sensing technology and DIY cameras. The document outlines Kannan's 15 lessons learned from her entrepreneurial journey starting LensBricks in 2013. Some key lessons include determining whether the motivation is technology push or market pull, validating ideas quickly, keeping the burn rate low, and assembling a business plan incrementally through validating hypotheses rather than having a fully formed plan from the beginning. The overall message is that entrepreneurship requires perseverance and believing in oneself through the ups and downs.