If you are ready to take on the task of healthy weight loss you need to learn how to choose your goal and to stick to it. If your goal is unrealistic it may be self defeating. If you have underestimated how much you need to lose to be at a healthy weight, you may end up stopping your efforts when you still have pounds to lose. On the other hand, your goal may have been too stringent, meaning that reaching it actually makes you underweight and having to go to extremes trying to reach it.
So clearly, it is important to be clear on what your ideal weight is, and to do so you are strongly advised to seek the advice of your doctor or qualified health professional, particularly if you are significantly overweight and/or have been inactive.
You can also find variety of different weight loss Web sites out on the internet which can also help you to determine your ideal weight. You can visit these sites, where you will be able enter your gender and height, to gain a fairly accurate idea of what you should weigh.