I agree with most of the suggestions above.
I have built a rock-solid crew of about 30 out of approximately 300 I've hired and lost during the past year and a half that I've been growing my business.
Showing up is half the battle. Making the right impressions/decisions when working will ensure that you keep the opportunity you have before you and perhaps even open the door for other opportunities. It is an employers' economy, and you are replaceable, unless you make yourself otherwise. I've made it clear to my entire staff repeatedly, that the opportunity they have is theirs to either keep, or lose. That goes right up to my top-level Operations Manager.
Of course, in return for that underlying potential threat of job loss, I offer dignity and respect to all those in my company. The ones who don't offer that to their peers/superiors, remove their own opportunity from their grasp, and we find someone who will. Anything else, we can train. But attitude carries the game, once a staffer has proved that they'll show up.
My company places regular ads for new hires, and typically, we'll get 50-80 responses, half of which will answer the phone/return the call when we call to schedule the first group interview. Of those 25-40, about 3 quarters of them will commit to the interview. Of those 18-30, about half actually show up. Of those 9-15, about a third end up staying on our roster. So, out of 50-80 responses, we end up with 3-5 usable crew members. Then it still remains to be seen who will stay on longer than the first couple months.
A lot of people say that it's hard to find work, but it's my experience as an employer/entrepreneur who has made my own job, and a lot of them for others, that more people want to complain about not being able to find work than actually can't find it.
So if you want to work, and are willing to go as far as getting certifications to do so, that will make an impression. But also, just showing up, and making yourself useful for what is needed in the moment will more than likely carry you where you would like to go.
'Cutter
"A fight is not won by 1 kick or 1 punch. Either learn to endure, or hire a bodyuard." -- Bruce Lee