I've been sailing for about 8 years now (with 2 years of hardcore 420 racing) and I got my own O'day Daysailer in 2018. This summer was the first time I've ever gone solo sailing for more than 15 minutes on a boat bigger than 14 feet. The first time I went out on my own had both the mainsail and jib out all the way (I don't have furling or reefing) and it went pretty good while I was in the cove where I launched. However, as I made my way out into the bay the wind picked up a little more than I expected. Nothing bad happened, but I just lost confidence and wasn't comfortably sailing anymore. It became slightly stressful and I had to keep all my attention on not letting anything bad happen. There wasn't too much wind and I am comfortable with up to 25 knots from the racing days, but it just wasn't smooth and I felt like I was barely making any headway. The next time I went out I only used the Mainsail to just simplify the experience and it went pretty good, but I still felt like I wasn't getting the most out of sailing close hauled. After a few more trips I kept coming to the same conclusion: My boat doesn't like sailing close hauled. The sail ket going slack and I lost all my speed and then it would catch and heel the boat over. It would also become almost impossible to trim in the sail no matter how hard I would pull on the sheet (so I would end up with the sail in a position for a close reach, but the boat close hauled). I know I'm not messing up my PoS because I've given myself a range of about 30 degrees to head up or downwind and it still felt like I was barely moving. So why is this happening? Is it my poor equipment (I only have a double pulley mainsheet setup and no boom vang)? Is it my lack of knowledge of the boat? Am I just overthinking this and should just continue on how I've been going?