Being an empath is always going to be challenging, however there are things you can do to recharge your energy and make you stronger so that you feel less overwhelmed and drained all the time. Most of it involves increasing your aura. The stronger your aura the more you can withstand and the less drained you feel, plus the stronger your powers will be. One trick is to stick the bottom of your tongue on the roof of your mouth. The more you can do that the stronger your aura will be. Also, clear quartz crystal increases aura. Wearing it, preferably a raw unpolished untumbled piece, or having it on you will increase your aura. There is also a technique for recharging with crystals when you have a hard day. It helps.
And here are two links for yoga poses to increase aura.
As for telling your family, I recommend not. Once you open that box you can't close it again. People always tend to fear what they don't understand and what we do most people can't always understand and those that do may take advantage of what you do. You may be able to trust one or two people with it but it is always better not to tell than to tell. In general. You have good instincts. Trust them but err on the side of caution. Wait until the time is right with the right people and never trust a negative person with your secret.