I'm not a psychologist myself but as stated upthread I used to work with many aspiring and qualified psychologists. It's a really tough career to get into. Best by far to treat Psychology at undergraduate level as a non-vocational degree subject.
For those who are determined to go on to become chartered psychologists in one of the various specialisms (clinical, educational, health, neuro, forensic, sports, counselling, occupational, research), it's essential to grasp that it will usually take a long, long time.
Typically for clinical psychology the progression is:
Three/four years undergrad - essential to get a good 2.1 or a 1st
MSc in a relevant subject (usually one year full-time or two years part-time) - this is not a requirement but it's a big help - again need a very strong result
Some people then go on and do Ph.D. as well (minimum three years full-time) - not essential but well-regarded
Two years (at an absolute minimum - five or six years is not unusual at all) as an Assistant Psychologist or Research Assistant or some other relevant work, ideally where you get supervision from a qualified psychologist - none of this will be very well paid
The lucky ones then get onto an NHS-funded clinical psychology training programme - three years, paid at a good salary and all fees (placement travel too, I think) covered too, good job prospects at the end of it all - but a long, hard slog to get to this point. Lots give up the attempt not long after graduation and go and do something else.