Hi Metarinka!
Please don't get offended but, at what age did you start welding for a living, and where have you worked as a welder, and what type of field welding have you done?
I'm asking this because at not yet 23 years young, It's kind of hard for me to understand your statement saying: "I'm glad I did my time as a welder and will carry those skills for my life." In other words, you make it read like if you've been welding for a living since grade school or even kindergarten!!! ;)
Btw, it is true what you said about barely skimming the surface of welding knowledge as it holds true for myself also, and I have more than twice your age of being an avid student of the sciences involved with welding engineering!!! Still, it's good that you recognize that, and I hope you will still recognize the same at twice your present age, because one will only continue to learn as long as they remain teachable!!! The worst that anyone can do to themselves is to think that they no longer need to continue to learn new perspectives in their chosen field or to limit themselves only to one specific field alone IMHO...
I can read with confidence that you will not be one of these individuals since you have exhibited a passion and drive for learning more and more ever since you started to participate in here as well as progressed in your studies at school... What you are doing at work right now is learning even more and soon enough, you will be ready to concentrate on learning even more advanced skill sets which is why I think you will be successful in you endevours whichever path you choose for your Masters degree.
However, you must also get a budget together and commit to saving a certain amount of money each month while your presently working in order to pay for some of the ancillary expenses that will be rearing their ugly heads when you do decide to persue your Master's because by the time you do so, you will not be able to completely fund all of your ancillary expenses with scholarship money alone, even if you have a 3.0 GPA or above which would qualify you for all types of scholarship money to persue your Masters but, just short in what is necessary for you to do so without having another revenue stream available to you that would not require you to give up some of your time working somewhere in order to do so and putting you in a position where you will age very fast from all of the stress involved from studying for your Master while simultaneously working to afford to achieve this very noble goal in the first place.
One more thing, don't try to rush all of this to get it over with so you can live the life you envision, because that is just someone else's fantasy!
This is just my own opinion so, if you choose not to agree with me, I can certainly understand whichever way you lean but I know that for me, I had a very productive day if I learned something, anything no matter how far it may be from the relevance of what would be considered a normal learning environment if one can even concieve such a notion!
I learn more from interacting with all kinds of individuals ,in different situations by always trying my best to keep an open mind although there are some days when I might just wake up and forget to unlock my mind which usually gets me in whole lot of trouble!!! ;) ;) ;)
From what little I know about you, I hope that I'm correct in presuming that you still find the time to keep your manual dexterity skill sets as tuned in as possible which is a very good thing to do because you never know when you might want to work a little bit harder in the future by starting your own business which seems to be something I can envision you embracing sometime in the future so, keep at it, and stay away from bad influences because at your age there are many ways to inadvertently ruin your career on account of making some bad choices by thinking no harm would result of making those type of choices!!! Don't fool yourself into thinking along those lines - CAPECHE???
I envy you because, this is the dawn of the "fusion" age which I call it, because of the fusing of many different sciences together and put to use in such a manner which will soon be followed by unlimited amounts of new discoveries which were unthinkable in the sunset of this age of information and technology advances or so we thought! So go out there and make us proud that we knew you when you were still developing yourself into someone with the right stuff to go beyond and rise above the status quo! ;) ;) ;)
Respectfully,
Henry