You can use affirmations such as:
I am worthy of love and respect from others and myself
I have an abundance of money in my life
I am good with money and spend it wisely
I open myself to the abundance of the universe
I am in tune with my higher self
I accept that I am a good and worthy person
Finally, remember these points:
Believe in what you are trying to manifest
Listen to your intuition
Manifest from your higher self and in harmony with your life's purpose
Manifesting is not just limited to material items. You can manifest more love, happiness, peace, and much more
Manifest for others, not just yourself
That YOU create the universe you live in, so changing your perceptions of it, changes the universe
Blessings,