If you have the motivation and the passion, you are more than half way to achieving your goal.
As for achieving your licence, besides an ability to fly, there are 14 written exams to pass. The minimum standard I would suggest are 5 GCSE/O levels including Maths,Physics, and English. 'A' levels preferably in science would be a distinct advantage, although not essential. Demonstration of grey matter.
The most complex is gets is basic trigonometry (sin:cos:tan) and quadratic equations. In physics, Boyle and Charles law for the meteorology.
You need to enjoy numbers......and simple sums.
As for employment, you need to do well during training and stand out from the crowd. Mere licence issue is no guarantee at all. Some very below average persons succeed in CPL/IR issue. Licence issue is possible provided a MINIMUM STANDARD is reached. All the boxes are ticked.
Pass all exams with a minimum of 90% per subject, pass all the flying first time, and complete a MCC/JOC course operating a Boeing with an appropriate training provider. This is the most important part of the course, as it indicates your learning curve potential for the type rating.
Best option ~ sponsorship with well known airlines.