Believe in your will and that your spell will work. Witchcraft can help one work with existing energies to bring to where you want to be. Your thoughts and magick work are powerful forms of energy, and positivity will only amplify that power. Combining manifestation into your physical craft can be a huge booster.
Perform divination before you cast a spell. Doing this can help you see what kinds of energies at play and if there are any potential challenges in your path. Additionally, you can even do a quick test of the waters to see if what you are working towards is even a good idea. A simple yes or no goes speaks volumes.
Be specific. Witches don’t play games with the universe and neither does the universe with us. Do your research, gather all your specific tools beforehand, and make sure your intentions are extremely specific. If you leave something vague and up to the universe, you may not like what comes back to you.
Remain present. Be in tune with yourself. Protect yourself accordingly. And remain steady as you feel the energies around you and begin to start your spell.