Here is a list (in no particular order) of tips that might help you along the way should you decide to take on a challenge like this. These tips are compiled from various online sources and my own experience.

• Decide how much you want to do the swim. Do you think of it every day, are you prepared to spend the time training and sacrifices in order to achieve this goal? If the answer is yes then commit early, book your boat and Go For It!!
• Get a long distance swim coach. You will invest a lot of time and money in a channel swim and you want to be as prepared as possible for the big day.
• Set yourself a pool training plan which you will stick to. This should be simple and not too diverse, so you can see your improvements which in return will give you confidence.
• Don’t allow any negatives to creep into your brain. You're good enough, you're strong enough and darn it, people like you!
• Trim your swim goals down to make the task small in your mind, that will make it smaller in reality!
• Learn to pee while you swim
• Selecting a good supporting team is very important, you will need them in your low moments in training and on the day.
• Make sure you have spare gear for your training swims, ear plugs, goggles etc. Be well prepared, get used to being disciplined and you will be prepared on the day.
• Don't overestimate your abilities, your pilot needs the truth to correctly plan the crossing.
• From Outside magazine, published January 17, 2018
• When water is 59 degrees Fahrenheit (15 degrees Celsius), the median survival time is between 4.8 and 7.7 hours.
• For every 1.8 degrees Fahrenheit (1 degree Celsius) that your muscles cool, your maximum muscle power drops by about 3 percent.
• For every 1 percent increase in body fat, you slow your rate of heat loss by 0.18 degrees Fahrenheit (0.1 degree Celsius) per hour.