Si es una carta a un/una amigo/a se puede terminar simplemente diciendo: Felicidades. Tina Li.

Hi my friend Tina, When you try to say goodbye at the end of a letter, is normal to say that: - Recuerdos...... it means like wishes - Espero que todo vaya bien.......like I hope everything goes well. - Espero verte pronto......... I hope see you soon

You could write something like this at the end of the letter: Con mis mejores deseos, <Your name> which means "With my best wishes". This could be a similar expression. But there are other forms to finish a letter, like "Un abrazo" (or "Un abrazo de tu amiga"), or something more formal like "Atentamente, <Your name>".

These are some expressions of good wishes at the end of a letter. - I wish you much happiness in your life = te deseo nucha felicidad en tu vida. - I wish you feel better soon = deseo que te sientas mejor. - I wish you luck = te deseo mucha suerte