How can I let those close to me know that I am trying to lose weight?

Be honest. Be honest & straightforward--let your loved ones know this is important to you; let them know you are making a positive change to improve your health. Be aware that just because you want to lose weight does not mean you need to lose weight. Check your bmi (body mass index) online--many sites let you enter your ht and wt to determine bmi. If bmi is less than 25 you may not need to lose weight.