
A goal or objective is a desired result a person or a system envisions plans and commits to achieve—a personal or organizational desired end-point in some sort of assumed development. Many people endeavor to reach goals within a finite time by setting deadlines. Goals may be either short or long term. Long term goals can take about three to five years to achieve, while short term goals are reachable in one to three years and hence people find it damn difficult to set those long term goals. With regard to your goals, you need not feel constrained you just need to emphasize and illustrate that your goals are logical/achievable and ambitious.
Tips for setting goals specially the long term ones:
Write down your goals.
Have an action plan
Schedule it
Pick a strategy and stick with it.
Focus on the future.
Adopt a long-term perspective.
Make sure your goals are realistic
Assign Responsibility
Prioritize your goals
Set both long term and short term goals.
Reward yourself
Stop procrastinating
Traditional goal-setting wisdom has taught us that a good goal must be
Written,
Challenging,
Believable,
Specific,
Measureable, and
Have a specific deadline.

Unfortunately, it's not too difficult to think of an example that directly challenges any of the above goal-setting criteria. For instance, the goal "to live a more spiritual life" may be a valuable, meaningful goal for many, but it's hardly measurable and assigning a deadline makes little sense for a permanent alteration of lifestyle. Your long term goal may be to spend more time with your family. Make your goal specific and give it a date to be accomplished. Keeping perspective is one of the hardest things to do. We just need to remember that productivity and achievement are a means to an end, not the end themselves.
More on goals setting:
Goals are likely to be achieved when they are specific. Don't state them in vague terms.
Secondly you should be known of how much you have achieved, and the parameters determining the achievement should also be made clear to self, so that there isn’t a vague idea regards your achievement. So make sure you set yourself a way of measuring the goal to confirm that you've achieved it.
It is sometimes doubtful regards achievement or non achievement of your goals specially the long term goals. When this is the situation instead of going ahead with your thought plans and practices you need to take a nap and re-schedule the plan of yours and you need to decide the amount of dedication and hard work you need to put in more.
I have seen people who regret saying I wanted to be someone else and got stuck up in something else. They regret regards this whole life as they didn’t become something they wanted to be, the one simple reason behind this could be setting of targets that are actually achievable or unrealistic targets. Planning things for yourself whom you believe you cannot achieve it by yourself and then to establishing for the sake that you may or might achieve it one is a wrong step of planning your long term goals. Goals or targets set should be achievable ones as well as realistic so that every attempt of yours put in to achieve your long term wish should actually help you sort and be proud of your achievements.
Make sure you define the date by when you want to achieve your long term goal. Put it in your diary or somewhere where you can see it and have check in dates such as 'half finished by this date.' In this way you can keep yourself on track to get moving towards your long term goal.
Long term goals are about synchronicity, about lining up your heart and the “coincidences” that life presents to you. You need to be “in tune” to recognize the opportunities that present themselves, things you might otherwise miss.