I know this with a surety because I feel this 'leaping of joy' every time I hear the truths and doctrines of the church. I guess, in my personal feelings, this is the way I feel the Spirit and am able to recognize it. Some people feel incredibly emotional and moved to tears, some feel a burning in their chest (which I have felt many a time, and is also a way I recognize the Spirit), some perceive or see words in their head guiding them to what is right...but for me, I feel this warm burning feeling in my chest and it encompasses my heart and my Spirit leaps for joy. Unfortunately, I sometimes think that because I don't feel this every single moment of the day, that I don't have the Spirit with me. This has been a major source of my doubts and worries about feeling the Spirit, but as I grow in the gospel, I'm beginning to recognize that The Spirit was a gift given to me after my baptism. The Spirit may not be a LOUD BOISTEROUS VOICE, that pushes and shoves you to do the right thing, or bright pillars of light with a choir of angels alongside it. I have learnt to recognize the Spirit as what people who aren't in the church believe as 'Common Sense'. We all have a level of Common sense; things like not stealing, not bloodily murdering someone else, things like that are a clear 'DUH!' of not doing it. There is no question about it, it's wrong. So, we believe that we all have a level of Common sense. I personally know that the Spirit is like Common sense, but more subtle. The Spirit almost comes off as your own thought, and in a way that makes you have faith. Have faith that it is the Spirit, prompting you and not to justify not doing it.
For example, there might be a young man or lady who is sitting alone. A thought will pop up in your mind, "I should go sit with her/him". You feel that it is the right thing to do, you feel that you SHOULD do it...I believe, personally, that to be the Spirit. He is a silent whisperer, He encourages us to do the right thing. It's not a loud shouting in your ear, but a gentle nudge that if you're not listening to, you'll miss it. It's a beautiful design by Heavenly Father