G. Mark’s Answer
You need a comparison matrix. It's actually pretty easy to put this together. It's meant to be an objective way of assessing options, but let me first give a caveat. While "numbers don't lie", they don't always give you all the data you need to make a choice, simply because you often can't think of all the things that could affect the data. That being said, here's what you do.
Try to put together an exhaustive list of all the things that go into describing each option. This is called "attribute listing". It's simply a list of all the stuff that makes it up and that makes a real difference to you. Some categories might be "cost" or "color" or "opportunity for advancement" or "chances of making my friends happy" or whatever.
The next thing you do is score each of these categories as to how important you think they are. For example, for different jobs, one attribute might be how much money you could make and another might be how many hours you work a week. You can use any scale, but 1-10 is a good bet. And try to break these attributes up if necessary. For example, the amount of work you do on a job may be measured by hours, but those hours may need to be further described by how hard you work during those hours. Being a security guard, for example, may not be very hard, but the hours may be long, and still yet punctuated by short bursts of high-risk activity, depending on the job.
So you put this table together with the attributes as headings for the columns and various options as rows along the left-hand side. Then you just fill in each square with the value of the attribute multiplied by its importance. The total of all the scores for each option form another column to the right of the matrix. Best score wins.
Now, the subjective, or "feelings" part. I add this because sometimes you might look at a few options and be disappointed as to the winner or loser. My advice is to take that into consideration. You might even add a sort of "handicap" to the score. You might see that chocolate cake for dessert got a 78 and apple pie got a 50, but you really like apple pie, so you bump it up a bit and "cheat".
This not only gives you a simple tool to use, but the calculation takes your mind off the options a bit, and allows your mind to process more about the choices.
And it's kinda fun.