Sometimes, it may mean asking for help when you see that you are not going to be able to meet a deadline otherwise.
First of all, doing what you say you will do means being organisedand managing your time effectively. You also need to be able to identify what to do first, so that if anything is missed, it is less important. Certain measures may be useful to address motivational issues or sharing experiences of learning and study techniques, etc.
Being reliable also means being trustworthy and conscientious.
Making sure that your CV is tailored to the position you are applying for shows that you have an understanding of what the employer is looking for, demonstrating commercial awareness and customer focus. The final element of being reliable is using your initiative to identify where work needs doing, and getting on and doing it.
Some learners may benefit from diversified support measures. There are plenty of opportunities to present yourself well in the application and interview process. You can also take on more responsibility in leisure, sport and non-work activities: organising an event, taking minutes at a meeting - or just contributing and making an effort.
It also, however, means being able to look around and see what needs doing—and then do it.