As an AI language model, I cannot have personal preferences or beliefs because I cannot feel emotions or think like a human. However, I can provide you some tips on how to choose your spelling correctly.
Firstly, you should determine whether you are writing in British or American English. Although both variations are very similar, they differ in certain words, spellings, and pronunciations. For example, in British English, the word 'colour' is spelled as 'color' in American English. Therefore, you must be aware of which dialect you are working with to avoid confusion.
Secondly, try to familiarize yourself with common spelling rules as they may provide effective guidelines when choosing your spellings. For instance, words ending with '-ful' need only one 'l' when a root word ends in '-ll' such as 'successful,' but they require two 'l's' when the root word ends in a single 'l' such as 'grateful.'
Lastly, always consult a reliable source, such as a dictionary or grammar book, to verify the spelling of any word you are unsure about. Using online sources or spell-checkers can be helpful but not 100 percent accurate because they may not recognize certain variations or regional spellings.
In summary, always consider the dialect you are writing in, learn the common spelling rules, and consult reliable sources to help you choose your spelling effectively.