Wa Alaikumu Salam wa Ramatulahi wa Barakatuh.
And We have already created man and know what his soul whispers to
him, and We are closer to him than [his] jugular vein
About guidance, knowing what is right from wrong, is a great indicator of your closeness to Allah (swt) and Allah(swt) guide those who are closest to him. Indeed he is the owner of Wisdom and Knowledge, he bestows upon whom so ever he will.
Other ways that Allah (swt) may guide you is that you remember often Allah(swt), his prophets and messengers. Their stories indeed in it there is guidance and many reminders for those who have faith.
In other cases Allah(swt) may bestow upon you "Good" dreams and "True" dreams.
It was narrated from ‘Awf ibn Maalik that the Messenger of Allaah
(peace and blessings of Allaah be upon him) said: “Dreams are of three
types: some are terrifying things from the Shaytaan, aimed at causing
grief to the son of Adam; some are things that a person is concerned
with when he is awake, so he sees them in his dreams; and some are a
part of the forty-six parts of Prophecy.”
(Saheeh Sunan Ibn Maajah, 3155)
But the signs of Allah(swt) are everywhere, in your surrounding, high above and even within yourself.
So why is there no more revelation, because Allah(swt) has decreed and promised that his Quran will remain until an appointed time.
From ‘Abd-Allaah ibn Mas’ood, who said: “Something will come and take
the Qur’aan one night and not one aayah will be left, either in the
Mus-haf or in the heart of any person, but it will be taken away.”
(Narrated by al-Daarimi with a saheeh isnaad, no. 3209)
May Allah(swt) forgive me if i made any mistake for blame there is only myself and shaytan. May Allah (swt) guide us always on the straight path and always make us truthful sincere muslims.