All at once
You can’t read a book all at once; it’s read section by section, page by page. Not necessarily sequentially, but never all at once.
Similarly, you can’t live life all at once. Life is lived moment to moment, day to day, year after year.
The more time we spend impatiently anticipating those future chapters, the more likely we are to gloss over the chapter we’re presently experiencing.
Today is a beautiful part of your story. Let it unfold. Read it with care.