Are you a winner or a loser? Yes, my friend, the mentality does all the speaking. The mindset you have portrays your category.
See how the mentality differs in the two:
Above everything, an individual should be self-motivated and must possess a strong zeal to achieve and be worthy in life. No external thrust can drive one towards success unless it comes from within. It's you who need to realize and value the essence of winning. Losers lack this parameter.

Losers reason out success as sheer luck and strongly denies the fruits that knowledge bears. They are reluctant to learn. On the other hand, you will find the other group, keen to learn, imbibe, and inculcate new things that can contribute to their growth. Their eyes are in constant search for new learnings.
Winners volunteer and shoulders responsibility while the other evades from it and try putting the burden on someone else.

The attitude to never give up and conquer impossible distinguishes a winner from a loser. Pessimism is a loser's trait. When challenged with something out of the box, they run away, giving up. While winners take the task upon them and believe in themselves. They visualize success throughout and remain headstrong. They put in all the effort that is in demand and come out victorious.

There is no doubt that winners are far more diligent, focused, and hardworking. They constantly strive and bring out the best in them. There exists, a healthy competition, amongst their contemporaries. Each other's hard work is the source of encouragement and inspiration. It acts as a stimulus to persevere. While losers accept their defeat in the first place and are out of the league.
Losers find comfort and prioritize it while the other significant half takes up challenges and deliberately lands themselves in the middle of necessary awkward situations. They face odds with the vision to achieve victory. They repeatedly choose discomfort to bring out the best in them. Comfort brings in a static condition that they consciously avoid. They are not willing to settle.
Winners are obdurate only about the goal they wish to achieve. But if their aim demands change in their action or the way of their conduct, they do not step back. They are open to adapting to changes that bring in fruitful results. They accept the changes and willingly compromises as and when required.

This a minute but notable trait that is present in winners and achievers in life. They have certain fixed short-term and long-term goals from the beginning. They are extremely passionate about their aims in life. They dislike leading a life filled with uncertainties. Winners work towards their goal in the way they had opted or wished. Losers have a way dilly-dally approach to life they prefer going with the flow.
You get one life to live, make the full out of it. Die a winner, at least in your own eyes.