.....then yes. If not, then no.
You're making $41,600 per year, plus vacation time, plus medical coverage, plus paid holidays off (I'm assuming, of course, but you should be able to adjust accordingly).
$41,600 divided by 2080 (working hours in a year) equals $20 per hour. If you get 80 hours of free vacation time, that's worth $1,600. If you get five paid holidays off (and it might be more -- federal employees get something in the ten day range), that's worth another $800. If your medical costs your company $300 per month, that's worth another $3,600. Oh, and let's not forget the 7.5 percent of your Social Security that your company pays on your behalf, so that's worth another $3,120.
$41,600 + $1,600 + $800 + $3,600 + $3,120 = $50,720 that your company pays for your services.
Where am I going with this, you might ask? Well, your worth is commensurate with what you can provide for another. If you feel that you're worth more than $50,720 (which is just under $25 per hour), than market yourself. If you branch-out on your own, you'd have to make at least $50,720 to equal what your company is paying you. If you market yourself to other companies, and you want to join their payroll, you have to show that you can provide more than $50,720 worth of value to them.
You can DOUBLE your salary, if you can sell your time (at least 2080 hours of it) for $50 per hour. That?s how you should look at it. Market yourself and sell your time. Entrepreneurs do it totally on their own, while employees rely on the safety net of a company. The former have no restraints, while the latter do.
Regardless of which you do, it?s YOUR TIME; it belongs to you. The question is how much value you place on your own time and how you choose to sell it. Would you sell YOUR TIME to another person for 10 cents an hour? Of course not. Would you sell it for $1,000 an hour? Most likely, you would. Of course, no one is obliged to buy it, so it?s an effort in finding the common ground between the available supply (of whatever it is you?re selling) and the demand for your ?product?. If you want to sell a year?s worth of your time to one company (with almost automatic extensions), it might only be worth $50,720 to them. If they were to buy the same product, but only three months of it, it might be worth $20,000 to them. Do that with four companies, and you just increased your income to $80,000 (but you lose your ?safety net? and you have to work differently).
The question you should be asking yourself is what your value is. Your challenge is to sell that to potential buyers. Employers are buyers, while employees are sellers. If you can prove to your company that your value to them is more than $50,720, and/or your value on the open market is more than $50,720, and/or they can?t find the same amount of value by paying another person the same amount of dollars, then you WILL make more. If your ?value? is not worth more than that, then you must be content to limit your income to that OR you need to find ways to increase your value -- and learn how to market that value, either to your employer or to others.
(Hint: It has NOTHING to do with certifications.)