You know the case, finding a job is very hard when you're young or straight out of education. High paid, dream jobs come once in a blue moon and that doesn't mean you'll get it, yet there's plenty of low paid, uninteresting jobs that no-one really wants. But this is for those dream jobs you want - how can you make sure you're the one they choose or even get in their good books during the interview process?
This is a no brainer. This is mainly what is asked of you, although you've literally just stepped out of college or university, it's not possible for you to already have experience, unless you got a part time job in something related to it or volunteered, but most people focus on their studies!
However, your best bet is, once you're finished with education, focus on getting a job or volunteering in the "sector" of the career you want. For example, if you want to be a veterinary surgeon, start at the bottom as an animal assistant or volunteer for an animal charity.
Expand your knowledge
There are loads of very useful and interesting courses that you can take in your own time, entirely online for free or at a very cheap price. You can also do entire degrees online for cheaper than enrolling at a university and going there physically. Make sure you get a certificate at the end and that it's actually recognised by employers before you take one. It's an easy way to gain more knowledge of the job sector you're interested in and it's something else to add to your CV that another potential employee might not have. It's a competition, so get ahead!
Put yourself in their shoes
If you were the employer for the job you want, what would you want/need from an employee to get the job done correctly and reliably? Reflect on yourself and ask yourself if you can actually provide for that employer and if you feel you couldn't, work out what you can do to make yourself more appealing to that employer and even more useful for that company.
Confidence in your abilities
It's not much use applying for a job when you're unsure of whether you can actually do it. Look up the specifications of the job and what they look for in a person. If you can say "I can do that" for everything, then great - you'll feel confident in your ability to do the job and that will come across in your interview. If one or two of the requirements are something you feel you definitely couldn't do or learn, then it's likely not the right job for you and there will always be a slight feeling of insecurity when going for the job.
Most importantly, stay positive in your job search! It can be relentless but your hard work will pay off in the end, but whilst you're unemployed and searching, make sure you've honed in your skills and expanded your knowledge so you're ready for when that dream job does come up!