I'm just going to be blunt and straight with you. The journey of personal growth is never-ending, and oftentimes, it is up-and-down, back-and-forth, and downright frustrating. You will frequently find yourself having good phases and bad phases; times when you feel worthy, confident, and optimistic, then phases when you feel useless, hopeless, and purely skeptical. You should expect your feelings to ebb and flow with seasons and experiences of life, until you learn to direct them yourself, a skill of wisdom, which generally takes years to develop.
I've been on the journey for conscious spiritual and personal growth for over 13 years and it gets easier as time goes on, so long as you choose to look for the lesson in everything. Note, I said it gets easier, but it never ends. There is always something learn and improve upon.
Just know that your feelings don't create your reality. You do. Your perceptions and evaluations of the world around you, and the subsequent beliefs you develop as a result of those perceptions, create your reality.
What exactly are you seeing and experiencing that seem to confirm negative thoughts, beliefs, and feelings about yourself?
Do you truly believe - from a rational, practical standpoint - that you can't change anything or will never become who you want? Do you honestly believe that you - as the individual you are - do not possess the same potential to change in any substantial way that anyone else possesses? Do you ever have times or phases in your life when you feel the change you desire is at least possible, the slightest bit of optimism or hope?
Generally when people feel hopeless, it's because they need someone to stand up and recognize their potential and capacity to grow and change. Unfortunate as it is, many people have grown up with insufficient love and truth in their lives.
Sometimes we need others to see our self-worth and unique value, and show it to us - by holding a mirror up to our face - before we can finally accept it ourselves.
After all, it can be difficult to see the light at the end of the tunnel when our eyes are closed.
Don't give up on yourself. Doesn't matter how hopeless thing feel or seem. Don't base your conclusions about the worth you possess or the value of your life on the way you feel or on how things seem. Base it on what your heart tells you and seek encouragement from others who may have perspectives on your worth and value you don't clearly perceive yourself. This is why we need one another - not a single one of us possesses all we need to fully understand and comprehend this human experience we call life!