Real estate is a business where you provide a service to an open market. Whether you own a small condo or a large building, real estate is a business.
Yesterday is long gone, so there's no need to dwell on it. Tomorrow? You could wait for next week or next Monday (like starting at the gym). But the best time to act is TODAY. Don't wait to invest; invest and then wait.
Yes, it is, especially when you have no clue what you are doing. However, you can minimize your risks by getting educated or partnering with an experienced real estate investor.